Pronounced Namco Cross Capcom ("cross" as in "crossover"), it's a turn-based strategy RPG by Monolith Soft that was meant to be a Namco-only game until Namco decided that their own characters weren't enough and asked Capcom permission to use their characters. The game follows the quest of original protagonists Reiji Arisu and his Fox-spirit partner Xiaomu as they lead an army of Capcom and Namco heroes larger than anything Marvel vs. Capcom 2: New Age Of Heroes and Capcom vs. SNK 2 combined could shake a stick at, to save the multiverse as we they know it from certain destruction by scores of villain teams and a nemesis of Reiji's who has resurfaced after ten years.It is most notable for its unique battle system (a pseudo-fighting engine as a nod to the other entries here; unfortunately, it makes the stages take an absurd amount of time), curious character choices (see below), and the protagonists' stories continuing in Endless Frontier: Super Robot Wars OG Saga, with the sequel Endless Frontier EXCEED even continuing the story of the original characters. And because of this, you can find the complete translated script here. Yes, the game is THAT text-heavy.Also notable for its (fantastic) opening sequence, which was animated by Production I.G and appears to have been directed by Hiroyuki Imaishi (of Dead Leaves, Gurren Lagann and Panty & Stocking with Garterbelt fame).In 2010, it was announced that Namco and Capcom would be collaborating again once more, although it's not quite what everyone was expecting: Street Fighter X Tekken and Tekken x Street Fighter. Both are more akin to being Spiritual Successors of the Vs. line, with SFxT developed by Capcom, and TxSF developed by Namco. Both games will be done in the style of each company's latest release (Street Fighter IV and Tekken 6/Tekken Tag Tournament 2).In 2012, Capcom is working with Namco/Bandai again for another Monolith-made game for the Nintendo 3DS. This time around though, Sega is also collaborating. The game is called Project X Zone. Reiji and Xiaomu and Saya will be re-appearing in this game, along with the protagonists of Endless Frontier.There's a Character Page in the works now.
The Atoner: Xiaomu actually was the one who killed Reiji's dad, but the latter doesn't even blame her for it because he already knew it. So he channeled his rage on Saya instead who forced Xiaomu to kill his dad in the first place.
Combatant Cooldown System: The game has a system similar to Final Fantasy Tactics—a unit is able to act once it has earned 10 AP, which accrues at 1 per turn for each unit on the map. The player can estimate the initiative order by looking at the numbers above each unit; whoever shows a "1" is the next to act. Different actions cost different amounts of AP, so a unit that only moves will act again sooner than a unit that moves and attacks. There are other special actions to spend and earn AP; for example, units may spend AP to reduce damage from enemy attacks and time Action Commands during enemy attacks to regain AP.
Combination Attack: Multiple Assaults, where a group of 2 or more units gang up on single or multiple foes. Sometimes these overlaps with There Is No Kill Like Overkill, and sometimes are followed sometimes by Ass Kicking Poses. Unfortunately, the Multiple Assaults can also fall under Awesome, but Impractical since they have a fixed damage, and by that point, you could literally kick ass to enemies up to how many thousand hit points from one turn. If you know when to use them, however, you can kill multiple enemies with one attack.
Combining Mecha: Unknown Soldiers 1P and 2P from Forgotten Worlds are accompanied by the Mobilsuits from Side Arms: Hyper Dyne. Just like in their namesake game, Side Arm α and Side Arm β are able to merge into a powerful form (this only appears in their Zetai Gattai Multiple Assault with Sylphie, the shopkeeper from Forgotten Worlds).
Every time new characters meet, they think the other person is cosplaying.
Crazy-Prepared: Saya is this in a nutshell. Anytime Reiji thinks he got her cornered, she finds a way to get out of the mess and comes up on top.
Cutscene Power to the Max: Ken can perform the Shin Shoryuken in a cutscene, something he can't do it in gameplay afterwards. It might be a nod to Brainwashed Ken from the mid-90s SFanime movie and Violent Ken from SNK vs. Capcom: SVC Chaos, where he could do all sorts of wicked stuff. It could be argued that as one of the top practitioners of Gouken's style, Ken has learnt at least the theory of all of his school's moves.
Everything's Better with Spinning: To the point of being able to create lightning (Klonoa). Baby and Mack fall into this category with the majority of their attacks. A number of other characters follow this trope too.
Hammerspace: Hsien-Ko's sleeves are filled with an infinite number of weapons (even firearms she pulls out for her MA). She explains that even after she throws her weapons, more appear in their place.
Heroic Sacrifice: At the end of the game, Reiji attempts to pull one to destroy 99 once and for all but suddenly, every single character goes Big Damn Heroes and suggests him to just beat the stinking crap outta her.
Hot-Blooded: Pretty much everyone at somepoint, this being a Banpresto game and all. Even Reiji has his moments when he's not in snark mode.
The two most surprising ones are Kuroinu Sandra from Legend of Valkyrie and Mike Haggar of Final Fight. Both are fairly minor characters (and in Kuroinu's case a fairly subdued one), but their voices in combat are easier louder then half of the cast.
Infinity Plus One Equipment: Sylphie's Dress is this. It costs 9999 G, however it raises all stats by 25. Naturally, you can only get it before starting the final chapter.
Incredibly Lame Pun: There's one level where magic causes everyone to start speaking in these. Needless to say, for the characters, it gets old really fast. Lampshaded by the characters and the game text (the text has the puns in red).
Irony: Hsien-Ko the Jiang-shi is paired with a Resident Evil protagonist.
Katanas Are Just Better: Expect a good deal of characters either have the real deal (i.e. Mitsurugi, Kagekiyo, Reiji, Saya, etc.) or a slight variation of it (e.g. Taki and Waya-Hime use kodachi, Xiaomu has a shikomizue, Ginzu uses a ninjato, etc.).
Massive Multiplayer Crossover: Naturally. Interestingly, the game Multiverse has about 4 or 5 actual worlds; meaning that many games already took place in the same setting; if they're similar enough.
More Dakka: The aforementioned Zettai Gattai, where Sylphie combines the Mobilsuits of Side Arms: Hyper Dyne into a more powerful form. The new mecha, alongwith the Unknown Soldiers and Sylphie (who has taken on the form of Michelle Heart from Legendary Wings) do not waste time in opening fire upon their foes. The unlucky victims are greeted by storm of bullets, followed by a FREAKING GIGANTIC LASER BEAM.
Recurring Boss: Nearly every single villain fall under this trope as they always flee when defeated until their proper death in the plot.
Rule of Symbolism: During Reiji's Battou Ougi Shinra Banshou super (Shinra Banshou being a Buddhist idiom meaning "all of creation"), he and Xiaomu take a page from the Chinese concept of the Five Elements. Basically, their dialogue (with the two mixing up the exact phrases and who says what from time-to-time) proceeds as such:
Also, Felicia constantly refering about King as "a fellow Darkstalker" despite King explaining her over and over that he isn't a Darkstalker, he's just a human Luchador wearing a jaguar mask. This long running gag also serves a a setup for another joke, as King (after complaining endless times about how dumb and dense Felicia can be) suddenly realizes that Felicia is a Darkstalker instead of a woman cosplaying as a cat as he believed all along.
Solo Unit Run: You technically can't pull this off in the main game, however that doesn't mean you can't do it in the final stage where the only designated unit is Reiji and Xiaomu. And yes, it's actually faster to finish the game with just a solo unit instead of bringing the entire party.
Speaking Simlish: Averted with Klonoa (who has this as a signature trope); Namco opted for him to speak proper Japanese instead. This is because the incarnation of the character appearing in the game was the one from Klonoa Heroes, one of two Klonoa games (three if you count the language track option in the Door to PhantomileWiimake) where the characters spoke a proper language instead of Simlish.
Spotting the Thread: In chapter 40 where seven members of the group get cloned. There's just one problem, the real Chun-li is also with the assault team, yet she also got cloned.
Super Robot Wars: Reiji and Xiaomu are pretty much official regulars in Endless Frontier. Saya also joins in, since she's The Rival and has big enough breasts to fit in the worldis sexy enough to compete with the world has enough importance to be included as well.
Sword and Gun: Reiji, Xiaomu, and Saya. Reiji, in fact, has two swords and two guns, as well as a shotgun. Xiaomu's blade is actually a cane sword. Saya also wields a M203 grenade launcher and probably beats them out in terms of sheer firepower. She also holds three katanas. And all of their swords have elemental affinities. Rule of Cool, much?
Upgraded in Project X Zone where artwork confirms that Reiji has three swords in his arsenal plus Gold and Hollywood (his revolver and shotgun).
Theme Music Powerup: "Lion - Irony of Fate" WILL always override the "enemy turn" music whenever Judas appears as an enemy. Also, it also has overriden every Tales of Destiny song (Stahn and Rutee even uses that music rather than the common battle/boss theme).
Tokyo Is the Center of the Universe: Not quite, as the game involves hopping through dimensions. However, a ferocious battle two rival organizations took place in Shibuya, Tokyo ten years ago, setting up the backstory of the protagonists (notably, Reiji). Ten years later (in 20XX), temporal and spatial fluctuations occur in Shibuya, setting the plot into motion.
Tonight Someone Kisses: How the game ends; Xiaomu kisses Reiji while commentating that smoking is bad for kisses.
Unexpected Character: Many of the character choices, although it does make for variety and unpredictability. You can thank Capcom and Namco for catering to a fanbase other than primarily Street Fighter.
Verbal Tic: Xiaomu has a tendency to add "-jya" (じゃ) to the end of her sentences.
Guy adds "-de gozaru" to his speech at times, just like a stereotypical ninja.
Hsien-Ko/Lei-Lei sometimes adds -aru, like a Chinese character in an anime.
The Voiceless: Tekken's King and Armor King in Namco x Capcom have no voice acting (but they do get text dialog). It gets silly with the later, for he doesn't get any pre-/post-battle quotes (at least the former has Felicia covering him up) and thus ends up standing there being mute.
Contrast Hsien-Ko, the most blatant example of Hyperspace Arsenal. In this game, she's revealed to hide various firearms in her giant sleeves as well, along with the more traditional weapons that she is normally associated with as well.
Wife Husbandry: Considering Xiaomu is 765 years old while Reiji's in his 20s...
Working with the Ex: Taizo Hori and his ex-wife Toby Masuyo. Although they divorced long ago, Toby still has mixed feelings about Taizo.
World of Pun: There's a stage where every character is making lame puns. All of the puns are highlighted in red, to boot.
Yokai: Most of the original series enemies are based off Yokai or other Asian mythological monsters, such as the Kamaitachi. Saya's sidekicks are these guys.