Shin Super Robot Wars contains the following tropes:
Accidental Kiss: During a Space Route Scenario, Sayaka Yumi shows Kouji Kabuto the completed Jet Scrander, which brings Kouji to tears with joy. He plants a happy kiss right on Sayaka's lips. Stunned, she half-yells at him and demands to know what the heck he's thinking, but it's clear that he's mostly thinking about finally being able to fly. Sayaka hastily tells him she understands how he feels, and manages to prevent him from kissing her too many more times.
Adapted Out: The other Shuffle Alliance members and the other Gundam Wing pilots don't show up in Shin. This is odd, as the Shuffle Alliance's evil counterparts, the four heavenly kings are in Shin. Also, Gundam Epyon and Wing Zero don't show up.
Ancient Astronauts/One Myth to Explain Them All: In the back story of Shin, a certain race fled their homeworld under the threat of the Ze Balmary Empire. Split into different factions with different leaders, they attempted to flee. One group fell beneath Balmar's shadow, while another fled to the safety of the Dug. Finally, one staked their lives on traveling to an unknown, distant region of space. This faction formed the Mu culture.
Animate Dead: The Devil Gundam can use its nanomachines to reanimate corpses, turning them into zombies to pilot the Death Army mobile suits.
Anticlimax: After the final scenario, Ryusei speaks for all when he hopes that this really is the end, and you're not going to hear the beep of another message calling you to battle. You do hear a beeping, but it's just Watta Takeo's watch reminding him it's teatime. Ryusei gives him a mostly good-natured hit on the head, which Watta's butler responds to in kind.
Anti-Frustration Features: The seishin search menu, first added in SRW Gaiden, now lets you select multiple pilots with the same seishin and activate them all at once. This is a big improvement over past SRW games where you could only activate one seishin at a time.
Apocalyptic Log: Eiji Asuka is able to identify an artifact that Professor Anzai brought back with her - a storage device which, despite its age, he may just be able to get running. After some fiddling with it, he gets it to project a hologram of a beautiful woman. With an expression of deep sorrow, she relates that her people are the descendants of refugees from a war with Balmar. They had scarcely begun establishing their own culture on this distant planet when the off-worldly assault came again, and the battle rages on even as she records her words. She tells of a massive war of attrition, the destructive fruit of which is a ravaged surface of the planet soon to be submerged as the polar ice melts. Believing their destruction to be imminent, her people have created twelve special children using the DNA harmonizing apparatus, and sent them to the highest spot on the planet in the hope that they can one day revive her people, and with her people's last reserves of Tronium. With a sad smile, she says that even the faintest glimmer of hope that one day her words will be heard and understood makes the undertaking worth it, and says that all depends on the twelve children, and the Mutron-powered combat robot, Raideen.
Armor Is Useless: Shin places a heavier emphasis on dodging capability, thus armor-related parts are useless because they reduce maneuverability.
Attack Drones: Funnels and fin funnels. The R-3 Powered's Strike Shields are notable in that they are entirely unarmed, with no guns or blades to speak of. They're just giant blunt bits of metal that Aya psychically smashes into enemy units.
Awesome, yet Impractical: At one point during both routes, Hayato Jin informs the SRX Team that the time has come to change out their engines, saying that only when combined as one can the SRX show its true power. The new engine uses Tronium, yet leaves a Plot Hole regarding how it could be developed so quickly. The bad news is that at around three minutes of time at full throttle, the engine is likely to meltdown and explode - the pilots surely won't make it through alive. For Gameplay and Story Integration, this means the SRX can only stay combined for three turns, and once the pilots separate their units again, they won't be able to recombine that battle.
Bootstrapped Theme: "Everywhere You Go", the leitmotif of Ryusei has become the theme song of Banpresto, the company that makes the games. Whenever you see their logo, expect the first few notes to play.
Brick Joke: Boss is about the only one whose machine wasn't handed down by the family, but Kouji observes that the Boss Borot is mainly just in the way. Boss takes offense at this, but with his lackeys in tow, he plans to one day build the Boss Borot into something great. Later on in Shin, Mucha shows up piloting the Borot, claiming he's taken it without telling Boss, entitled by all the hard work he put in. He's not too worried about reprisals from Boss, who is unlikely to be able to follow all the way to space, and has even installed a MAP-based weapon. It also turns out the Boss Borot's new attack, though powerful, is nearly impossible to hit anything.
Bunny-Ears Lawyer: during his introduction in scenario 5, Ryusei quickly establishes himself as some kind of crazed super robot otaku, and Prof. Hamaguchi confides to Akira that as a pilot, Ryusei is first rate.
Calling Your Attacks: Although just about everyone does it, Ryusei has a particular joy for doing this, even when simply letting off a couple shots in a real robot, to the point where he initially gets some funny looks from allied characters.
Came Back Wrong: After the final scenario, Kouji is disgusted the Devil Gundam would revive the dead as zombies, and the psychological effect of doing so is plainly visible on Eiji, as he remembers Ahmos Gale.
Cruel Mercy: According to Ryusei in a Yonkoma, this trope is the reason behind the "Mercy" Spirit Command note If the pilot's skill stat is higher than the enemy pilot's skill stat by a certain number of points, the enemy unit will not be destroyed if HP hits zero; instead, render HP to 10 in SRW.
Demoted to Extra: Shin Getter Robo, Dancougar, and Trider G7 have no plot relevance in Shin, while Gundam Wing and G Gundam get the bare minimum of its characters. In fact, Heero Yuy is a Secret Character in this game.
Doomed by Canon: Gale has to die because the V-Max event is reenacted in Shin.
Individually-upgradable weapons, which is annoying for a series that encourages the player to see as many combat animations as possible. This quickly degenerates into using one (hopefully free) regular-duty P weapon, and one "big gun" for dispatching bosses or other heavies.
Single-instance transformable mecha during Intermission. This is a very strange arrangement where you must explicitly "transform" or "combine" units to see what their different capabilities are. This is more than a mere annoyance when you see that it impacts how units sortie - if a unit is transformed to flying mode on a map precluding flying-only vehicles, it will be unsortiable. Moreover, combinable units have a separate set of equipment slots from their constituent units, so beware!
Old-school magical mechanics. While the spell list is considerable expanded over most of the "original" chronology games, spells like "Encourage" only work on adjacent units instead of allowing arbitrary selection. The most telltale sign is that "Luck" confers both double money and double experience.
Expy: Aside from the Hermodr battleship and Zyflud, none of the Balmarian mecha in Shin reappear in future SRWs. However, the Zadoc and Cees are most likely the base designs of the Zechariah and Megillot from Alpha.
Eye Beams: The SRX's Gaun Genocider, Mazinger Z's Koshiryoku Beam, and Gaiking's Zaul Geyser
Fantastic Racism: Lu Cain and the Ze Balmary Empire towards the Earthlings. Eiji asks why Lu Cain persecutes the Earthlings in an Earth Route scenario when Lu Cain is only after the Tronium. Lu Cain replies he's free to dispose of cosmic garbage like the Earthlings however he sees fit.
Final Boss: Laodecia (Space Route) or the Devil Gundam (Earth Route)
First Name Basis: Professor Anzai gets called Eri by Professor Daimonji, to indicate that they're becoming a couple.
Foreshadowing: During the last scenario of the Earth Route, the Daikyu Maryu team arrives in time to see Gosterro get eaten by the Devil Gundam. In the true final scenario, Gosterro is the pilot of the Devil Gundam.
Aya: Team leader (and sometimes Team Mom, if Ryusei and Rai start arguing) (Ego)
Godzilla Threshold: Ryouma Nagare, for his part, is rather reluctant to invoke the potentially catastrophic might of the Shin Getter, but will admit the aliens pose an even greater threat.
Go Karting with Bowser: During a Space Route scenario, Hathaway Noa is chatting with Quess Pariya, who wants to know what Amuro is like. Hathaway, confused, says that Amuro is totally normal. Quess says that she's studying yoga, hoping to gain the ability to know what people are like even without talking to them - much like the fabled Newtypes can.
Half-Human Hybrid: Eiji and Julia is this, thanks to a "genetic equalizer" device and a woman into Interspecies Romance among the "Boazan empire" folk who rescued their Earthling father from deep space.
Handwave: Ryusei wants to know why Dancouga is combined instead of being split into its constituent Battle Beasts. Masato meanly asks Shinobu to explain, and the others finally say that Shinobu did something careless, and they've been ordered not to separate.
Heel-Face Revolving Door: Heero Yuy works for Char Aznable at first because he rescued Heero from a harsh life at the hands of the Zanscare Empire. Later on, Chief Oka gives Heero new orders from Doctor J to stop Char himself. However, he couldn't follow these new orders until he discovers Char siding with the aliens. Heero can join the Londo Bell as a Secret Character.
Hero of Another Story: Shin has a route split, but it covers a majority of the game; in fact, some characters are exclusive to each route. The only time they get to meet is in the True Final Boss scenario.
Hot Scientist: Professor Anzai is the world's foremost expert in ancient relics, and is especially famous for advancing the unique notion that the Mu and Atlantean cultures were founded by aliens. When rescued by the protagonists, they see that Anzai is such a stunning beauty, even Professor Daimonji is drooling. It's clear she's better off in their hands than in the clutches of the aliens who pilfered her from Osaka.
Human Aliens: The Balmarians look exactly like humans, which becomes a plot point.
Humans Are Warriors: Discussed between Laodecia and Lu Cain in a Space Route scenario. Laodecia says that Lu Cain's father, Gresco has been proved right - the humans' fighting ability is beyond reckoning. What's more, the tougher the challenge, the more humanity stands up to it. In short, the aliens are just making the humans stronger.
Hypothetical Fight Debate: While Domon Kasshu is busy chasing Master Asia and the Devil Gundam in Scenario 33 of the Earth Route, the rest of the group lightly place bets on whether the God Gundam could kick the R-1's butt.
I Owe You My Life: Heero and Zechs work for Neo Zeon because Char had saved their lives.
Jumped at the Call: In Ryusei's first appearance in Shin, Professor Hamaguchi orders him to sortie in the R-1, telling him not to press his luck since reinforcements will arrive soon. Ryusei has been waiting for this chance and isn't planning on not pushing his luck. His highly confident battle cry does little to inspire the staffers, but they have little choice but to leave it up to him. He beats up the aliens with backup from the Raideen, but Hamaguchi gives Ryusei a verbal chewing for pushing the experimental R-1 so hard, threatening to ground him if he pulls any more reckless stunts.
Leaning on the Fourth Wall: If the player destroys the first enemy unit in Scenario 22 of the Earth Route, the enemy will use a Spirit Command. Of course, Emperor Zuhl's "galactic" genius is not matched by his assistant, who rapidly starts pushing the wrong buttons. After a while of this (culminating in Tekagen), Zuhl furiously orders his subordinate not to use any more Spirit Commands.
Let's You and Him Fight: Domon Kasshu encounters Heero in Scenario 8 and asks him a few questions. Heero remains quiet and attempts to exterminate Domon, kickstarting the Gundam fight.
Love Makes You Crazy: If Usso Evin fights Laodecia in the final Space Scenario, Fuala Griffon will appear, vowing to pay back the debt she owes Laodecia. When Usso protests, she tells the boy to shut up, saying only a strong man like Laodecia can satisfy her - and Tassilo Vago wasn't up to the task.
During a Space Route scenario, Kouji and Astonaige Medoz are both a tad baffled how to use whatever the new gadget on the Mazinger Z is. It claims to be some type of energy charger, yet it doesn't have any visible controls. Astonaige figures it will probably just..."do whatever it does" when the time comes.
Mind Rape: To prevent other humans from following the resistance's lead, Char is having the Angel Halo, a giant brain wave amplifier, built in Side 2 and aimed at the Earth. The idea is to amplify Queen Maria's brain waves and bend the Earthlings under mind control, or at the very least, pacify them. Even Laodecia is astounded that this feat is possible, and tells Char to go ahead with this plan.
Mistaken for Gay: It turns out what Lu Cain was after was in the university database, which Ryusei plays off as just minor trespassing. Rai lambasts Ryusei's foolishness, and when Sanshiro Tsuwabuki weakly agrees, the dialogue awkwardly comes out that Ryusei has implied that Rai prefers men.
Mutually Exclusive Power Ups: If the player allows the Daikuu Maryuu to be attacked by the Shiki Death Squad in Scenario 25 of the Earth Route, the Fortified Layzner will be available in Scenario 33 of the Earth Route. Otherwise, it'll be the Layzner MK II.
My God, What Have I Done?: Master Asia first met Domon when he was building the Devil Gundam with Professor Kasshu, and immediately felt an overwhelming sense of warrior kinship. To test Domon's potential, he began the process of training him, realizing too late that Domon proved not all humans were dangerous. Unfortunately, it was too late to prevent the completion of the Devil Gundam, which took Kyouji prisoner and survived its plunge to Earth. When the Balmar fleet arrived, Master Asia saw little chance of escaping or mankind surviving. He then realized he could use the Devil Gundam to blow away one or two of the enemy capital ships, and has been working hard at that ever since. However, he realized another mistake - Earthlings are far more resilient than he expected. For his grave error and all the trouble stemming from it, he offered his life as an apology to Domon.
The New Adventures: Shin is an application of this trope because "shin" is Japanese for "new"
Nice Job Breaking It, Hero: After a scuffle with Lu Cain and his Demon Death Platoon and a duel with Master Asia, the cave fell apart as a result of the fighting. Professor Anzai nearly faints, totally unable to comprehend how the hotheaded Domon and Ryusei could ignore the cultural value of whatever was in that cave.
Not His Sled: Master Asia is an agent of the Dug Interstellar Republic, sent in response to report intelligent life on the planet. Also, Heinel does not learn that he's the Go brothers' half-brother, and Zechs does not reveal that he's Relena's long lost brother.
Not so Above It All: In Scenario 11 in the Earth Route of Shin, Rai introduces himself formally after the battle, saying that the aliens have been up to abducting people. Sanshirou has been eyeing Rai, wondering if he's another weirdo like Ryusei. Rai stiffly asks him not to liken him to Ryusei, the shame of the SRX Team. Sanshirou tells Rai about Ryusei's "self-proclaimed genius pilot" line, which Rai allows after a moment is pretty much true. The others realize that Rai, too, is somewhat off his rocker.
Oh Crap: During Scenario 30 in the Space Route, Dr. Hell and Baron Ashura get this reaction when they are about to be destroyed by the SRX. They also wonder if Zechs Merquise can provide some backup.
The Only One Allowed to Defeat You: Gosterro wants to be the only one to beat Eiji. During one scenario, Gosterro appears and smacks the supercharged Zakarl out of the way because the Layzner is his prey. Gosterro has made himself an enemy out of his own allies, and the SRX Team realize they've only got one chance to defeat Lu Cain, something that hasn't succeeded until now, but likely won't succeed yet, causing Daimonji to sortie the rest of the crew, including the Shin Getter Robo.
Orcus on His Throne: Laodecia does little to drive the plot in Shin. Lu Cain drives the plot in the Earth Route, with Master Asia and the Devil Gundam interfering here and there. Char Aznable drives the Space Route plot until he is defeated. When Laodecia steps up to fight the Londo Bell in the Space Route, it turns out the Zyflud has the most HP of any of the bosses on that route and can put a hurting on the SRX.
Overly Long Fighting Animation: Shin adds Super Move Portrait Attacks and long cutscenes to attack animations. This turns out to be a double-edged sword because like older SRWs pre-Alpha, animations are unskippable. When running at default speed, the load times and animations are long. Much of the poor reputation of the game stems from its slow loading frequencies and absurdly long, unskippable animations.
Pet the Dog: After a Space Route scenario, Laodecia finds a capsule with a weakened Earthling floating inside. She manages to say that her name is Fuala before losing consciousness, and Laodecia orders her tended to. This act causes Fuala to become loyal to the Balmarians' cause.
Pixel Hunt: Shin contains various secrets hidden in certain spots during various scenarios.
Plot Driving Villain: Char Aznable takes on a heavy role in Shin's storyline because he is responsible for the Char's Counterattack, Victory Gundam and G Gundam plots in Shin
Psychic Powers: As usual, Shin has "Newtypes", but while Aya is the one who telekinetically combines the SRX. After a Space Route scenario, the party is impressed at the SRX's abilities, but Amuro notes that Aya is looking a bit green in the gills from all the power she has to expend to keep the SRX together. Hayato agrees to give them a day off. Aya confesses to Amuro later that she is in fact an "Esper", apologizing for misleading him earlier. She's not entirely thrilled with her powers, which Amuro can relate.
Power Fist: The R-1's T-Link Knuckle, Shining Gundam's Shining Finger, and the God Gundam's God Finger.
Retired Badass: The Getter Team. They act as mentors for the protagonists' group and join up with Shin Getter late in the game.
Reverse Mole: Nanai Miguel is more than a little uneasy about the alliance with the Ze Balmary Empire, and Char admits one mistake and all of mankind could become the Balmarians' playthings. He's willing to take that risk, given it will take time to assimilate Balmarian tech, but he needs mankind to sit still until then. Nanai is willing to go along with this so long as Char loves her and helps keep construction of the Angel Halo on schedule.
Rookie Red Ranger: Ryusei is the last member to join the SRX Team and the protagonist of Shin. He's pretty much the de facto leader of the group, mostly because the R-1 is the head of the SRX.
The Quisling: Neo Zeon jumped at the chance to help the Balmarians, as the one and only means to ensure a future for mankind.
Screw the Rules, I'm Doing What's Right: As Bright Noa deliberates during Scenario 20 of the Space Route, Bright gets an unexpected transmission from someone he's never met before: Chief Oka of the Federation Far East Base. He asks if Bright is planning to heed the order he just got to return, and Bright says that he doesn't see any alternative. Oka is adamant that Bright do no such thing, saying that as Bright is well aware, Staff HQ is anything but sane these days. There's no call for Bright to be punished for the whims of a few lunatics, especially since he and his men are one of the few glimmers of hope mankind has left. Bright briefly protests that disobeying would get all his men branded as traitors, but Oka firmly points out that fighting the aliens comes first. He tells Bright to leave things to him and his friends at Staff HQ, though The Reinforce Jr. itself will have to be relinquished.
Amuro is impressed with Oka, and after all the transfer is complete, Londo Bell decides to go to the Moon. This will fulfill the League Militare's needs and let Amuro pick up the Nu Gundam from its commissioned builders at Anaheim Electronics. Usso is a little sad to see Gomez go, but most of the rest of the crew are still with the Londo Bell.
Sequel Hook: At the end of the Space Route, Char sends a message to Londo Bell, whom he expects to be in a festive mood, yet unjustified by what Char is convinced has been a horrific mistake for mankind. He reckons they got lucky with this victory, and points out that Balmar is sure to send a second, or third fleet to Earth, without any shortage of firepower. Just how far will Londo Bell's efforts last, he muses, ostentatiously checking himself and claiming sarcastically that sour grapes weren't the intent of the message.
Shut Up, Hannibal!: Londo Bell receives an unexpected communiqué from, of all people, the Neo Zeon - in particular, from Char! Gomez takes the call, asking whether the rumors of Char's turning traitor on mankind are true. Char allows that he's aiding the aliens, but says that he hasn't sold out humanity. Romelo doesn't buy that, but Char asks the Londo Bell what they think awaits at the end of this fight. After all, the Ze Balmary Empire possesses such incredible technology that they've been able to come all this way just to take over the Earth. He figures that Londo Bell's foolish resistance is only going to enrage the more, which is why Neo Zeon jumped at the chance to help the aliens, as the one and only means to ensure a future for mankind. Amuro tells Char to shut up. Amuro points out how Char loves to prattle on about justice based solely on his own narrow views. He asks what value a peace founded on the sacrifice of numerous human lives could have, and challenges Char to stop treating other people's lives like toys for once. Char thinks Amuro is full of it, claiming that mankind's history shows that people are happiest when ruled by the strongest leader. He thinks Amuro is incapable of grasping the larger picture, accusing him of myopically leading people even deeper into danger and then having the gall to question his lofty perspective. Amuro fires back that capitulating to the aliens and therefore making human kill human cannot be correct. Char asks whether Amuro thinks that fighting until no one is left can really make mankind happy, and Amuro points out that mankind's defeat is not yet a foregone conclusion. Kouji finally interrupts, pointing out that there's no way to know that until they try. Shinobu goes further, pissed off beyond measure at people like Char who debate outcomes without lifting a finger on their own. Char figures that there's no common ground between Londo Bell, and informs you that he'll show them no mercy, which is just fine with Shinobu.
Solo Sequence: In Scenario 34 of the Earth Route, Domon has to pursue Master Asia all by himself.
Stay with the Aliens: Since Char is worried about mankind too, in his fashion, he has chosen to accompany the aliens returning to their own worlds. Therefore, he is entrusting Londo Bell with all the alien technology he has been able to amass, telling them to put it to good use for humanity.
Triang Relations: Type 7 happens with Amuro (A), Aya (B) and Chen Agi (C). In a Space Route scenario, Amuro and Aya start complimenting each other on how swift they are in combat, and she's clearly interested in him. Chen continues glaring at the two of them from her place in hiding. In another Space Route scenario, Chen is pleasantly surprised when Amuro invites her to accompany him to the city.
Unobtainium: "Tronium" only exists on the planet Tron; unfortunately, Tron vanished due to a meteor impact long ago. This caused the value of Tronium scattered throughout space to skyrocket, especially since it's needed for every warp-capable ship the feuding parts of the Ze Balmary Empire want to send into battle. According to Eiji, a rice-grain sized piece of Tronium is capable of powering over thirty battleships.
Villain Exit Stage Left: During the second-to-last scenario of the Earth Route, The Daikyuu Maryuu team beats up Lu Cain and the Demon Death squadron to the point where Lu Cain and the Demon Death squadron are forced to retreat to the mothership. To find out what happened to those guys, You have to play through the Space Route and fight them in the last scenario in that Route.
Villainous Breakdown: During the final Space Route scenario, Laodecia starts disbelieving this is happening to him, thinking this is a nightmare he'll wake up from as soon as he returns to the Hermodr...except he can't, because the ship fires its main gun and reduces him to particles.
Wave Motion Gun: Wing Gundam's Buster Rifle, the Cairas Gree and the Hermodr's laser cannon, which destroyed a group of space colonies and acts the primary obstacle in the final scenario of the Space Route.
We Need a Distraction: Before Scenario 29 of the Space Route in Shin, Londo Bell concocts a plan: create a diversion to let their forces sneak inside. The diversionary squad includes Ryusei, for whom making a big scene is a specialty.
Wrecked Weapon: As the Voltes team sorties in Scenario 14 of the Space Route, the aliens spring their trap: the Namazunga flies over to wreck their Ultramagnetic Generators. Voltes is in dire straights to say the very least, and the group loses touch with Voltes as they slow the transport down to try to allow an emergency landing. After a quick rescue by the others, Ken'ichi is the first to wake up, disoriented and in considerable pain from whatever the bad guys did. He frantically asks after his other pilots, who are still out cold, though Megumi wakes up in short order. The bad news is that the Ultramagnetic Generators of all the Volt machines are toast, and they can't even move, much less combine. Ken'ichi is heartbroken, seeing as how they just got good at combining and all. Nothing for it but returning to Japan!