Patrolling the streets of his home city, the Flash is attacked by villainous mooks, including killer robots, which he finds out of place (as he puts it, "Keystone's usually a robot-free zone"). After learning of the threat as a worldwide issue from the rest of the Justice League, the Flash must race to defend various cities, such as Gotham and Metropolis, from the invading armies.
The player controls Flash, goes around beating up enemies with Super-Speed powers, and can summon one of several other Justice Leaguers to assist them in battle.
Justice League Heroes The Flash contains examples of:
- Action Girl: Wonder Woman and Black Canary can used to assist Flash in battle.
- Added Alliterative Appeal: The Flash does this while mocking Grodd. Twice. In the same sentence.The Flash: First rampaging robots, and now a megalomaniacal mind-controlling monkey!
- An Ice Person: As her name implies, Killer Frost has ice powers.
- Annoying Arrows: Averted. Green Arrow's special arrow storm moves are just as effective as Superman's Eye Beams or Martian Manhunter's Ground Pound.
- Aquatic Mook: One type of Mecha-Mooks, introduced in the Sunken City level, is surrounded by a water barrier that has to be destroyed. It can return to the water and come back out with another water barrier if the first has been removed.
- Assist Character: Since the focus of the game is the Flash, the rest of the Leaguers (except for Batman) fill this role.
- Ax-Crazy: Zoom, demonstrated when he floods an entire city.Zoom: I would have flooded this city for free — just for the pleasure of kicking your butt.
- Behind a Stick: Occasionally, breaking a traffic light post will reveal that a Mecha Mook was hiding either behind or inside of it, despite being many times larger than the pole in question.
- Big Bad: Brainiac.
- Boss Room: Gorilla Grodd is in City Hall, Killer Frost has made a room out of ice, Circe is atop a mountain temple, Zoom finishes his battle in a destroyed house, and Brainiac is inside of his mothership, which you have to break into.
- The Cameo:
- Batman appears in a couple of cutscenes, but isn't one of the heroes you can call into battle for help.
- If you get killed while using Super-Speed, The Black Flash will come after you. In the comics, The Black Flash serves as a sort of Grim Reaper to speedsters.
- At the end of the game, Darkseid is revealed to have been set free.
- Catchphrase:
- "Fastest Man Alive!"
- Even the other heroes get in on the fun:
- Superman: "Man of Steel!"
- Martian Manhunter: "For Mars!"
- Wonder Woman: "For Themyscira!"
- Green Arrow: "Eat arrow!"
- Combat Tentacles: Brainiac’s organic robots have these. Instead of grabbing onto you or throwing items at you, though, they just kind of slap you with them.
- Covers Always Lie: A subtle one. Batman is on the box art in the midst of the other heroes, but only appears in a cameo. All of the other non-Flash characters on the box can be summoned into a fight, but Batman can't.
- Crowd Panic: In some of the urban areas, you can pass groups of pedestrians fleeing the area.
- Dash Attack: The gameplay mechanic that truly sets this game apart from other Beat 'em Up games. Flash can instantly dash to any enemy that you direct him to.
- Deadpan Snarker: The Flash, as usual.Martian Manhunter: "Brainiac's ship. Be careful, it's heavily defended."
The Flash: "Ah, I was wondering what the giant gun turret was for. Thanks for clearing that up." - Defeat Equals Explosion: Every defeated robot explodes in a large fireball. It doesn't harm the Flash, or other enemies, for that matter.
- Die, Chair, Die!: You can destroy a few objects for healing or your speed force meter, such as crates and traffic lights. Occasionally, though, breaking these objects will reveal a Mecha Mook hiding within them.
- Did You Just Punch Out Cthulhu?: Beating up the Black Flash is a downplayed example of this. It is possible to go the entire game without ever seeing him, and beating him only makes him harder the next time he shows up, until the point you finally do get killed.
- Elite Mooks: Giant robots with a bomb-launching attack.
- Eye Beams: One of Superman's attack animations sweeps his heat vision across the screen.
- Flunky Boss: After taking some damage, Circe will summon some Invincible Minor Mooks to aid her.
- Friendly Rivalry: Superman and the Flash have a small one regarding their speed. There is even a minigame where you have the opportunity to race and claim the title of Fastest Man Alive.
- Gameplay and Story Segregation: Much of the plot is The Flash protecting the cities of other heroes while said heroes have wound up elsewhere. At one point, it is even specifically stated that Superman can't be reached. Yet you can still summon these characters at a moment's notice...
- The Grim Reaper: Black Flash. If you get killed while using Bullet Time, he will appear to take the Flash back into the Speed Force. If you can beat him up before you run out of your speed meter, though, you will regain a sliver of your health bar and won't lose the life.
- High-Speed Battle:
- Unusually for this trope (but not considering who the focus of the game is), ON FOOT. The running portion of Zoom’s boss fight consist of the Flash and Zoom running around each other, both attempting to circle behind the other to strike at high speeds.
- The Superman Race mode unlocked after beating the game. The premise is Superman proposing a cleanup job on any mooks left behind, and Flash makes a race out of it.
- Invincible Minor Minion: Circe magically creates four of these at one point in her boss battle. They look and fight like the warriors the Flash has been fighting throughout the entire area, but neither you nor the Justice League can damage them in any way. Circe will eventually destroy them when they prove ineffective.
- Killer Robot: A large number of enemies in this game are Mecha-Mooks, of which there are several varieties.
- King Mook: Grodd looks very similar, except larger, to his gorilla thugs once you punch his Mind-Control Device off.
- Konami Code: When used in the start menu, enemy thugs will be gigantic in the game.
- Made of Explodium: Every robot in the game goes out with a bang when defeated.
- Mecha-Mooks: Most enemies are robots and drones.
- Mirror Boss: Zoom. He is the only character who can use Flash’s Dash Attack back at him, and seems to move unaffected by Bullet Time.
- Mooks: Several. Average-joe type thugs, robots, drones, gorillas, hammer-thugs with colorful suits and top hats, and mythological Greek-inspired warriors, just to name a few.
- Most Common Superpower: Every female in the game has a particularly pronounced bust, especially in the cutscenes.
- Palette Swap: Most mooks have differently colored but otherwise identical teammates. Downplayed, in that there is a variety of different enemies you can fight. Additionally, Zoom wears a color-flipped version of Flash's costume, but this is standard for Reverse-Flashes.
- Pungeon Master: Pre-fight, everything Killer Frost says is a cold-related pun. The Flash, naturally, does the same back at her.
- Regenerating Mana: Flash's speed force meter will slowly refill a few seconds after using some of the power. You can pick up items to instantly refill a portion of it to speed up the process, though.
- Sequel Hook: Brainiac’s machines have somehow set Darkseid free from his imprisonment. Superman claims that the Justice League will be ready when he arrives.
- Shield-Bearing Mook: One variation of robot goons carries a large shield.
- Silliness Switch: Cheat codes can be used at the start menu to make Flash or the enemies either large or tiny, and can be stacked. Giant Flash versus itty-bitty goons? Entirely possible.
- Story-Driven Invulnerability: During the obstacle-avoiding part of Zoom's boss battle, you can't even attack him. This doesn't last very long, though, as the rest of the pre-fight chase allows you to deal damage to him before reaching the actual Boss Room. Also, summoning other Justice League Heroes during a boss fight will only damage the boss if it is during their vulnerable moments.
- Super-Speed: Naturally, as per the character. It manifests itself in two ways; the Flash can enter Bullet Time or can Dash Attack to a completely different enemy.
- Time-Limit Boss: You have two minutes to defeat Brainiac before his bomb blows up Metropolis.
- The Very Definitely Final Dungeon: Metropolis is the last level, but the final battle happens inside Brainiac's mothership. You have to destroy the gun guarding it as well as kicking in the door just to get in, all the while being attacked by a steady stream of robots.
- Walk on Water: Both Flash and Zoom use the running variation of this in the Sunken City level. Using Bullet Time will allow you to cross water between platforms without sinking in, and the first parts of Zoom's boss encounter are a chase on the waterways and then engaging in a fistfight while still running on the water.
- Wake-Up Call Boss: Circe. Unlike Grodd and Killer Frost, she’s the first boss who actually has some nasty tricks.
- Wolverine Publicity: Underneath The Flash on the cover art, it shows Batman among the other heroes, but Batman only appears in a couple of cutscenes. The other heroes on the box can be called into battle, which means Batman replaces the fifth hero you can actually summon, Black Canary.
