

The story involves Marvin the Martian coming to Earth to attempt, as usual, to destroy Earth. However, upon reaching the planet, his dog Lieutenant K9 accidentally let all his tech fall through the ship's airlock, including his Martian soldiers and a teleportation device he was attempting to use to send a bomb to Earth. The teleporter ends up broken in several parts that are everywhere around the world, forcing Bugs Bunny to go on a quest to find all the parts before Marvin gets them. As the game goes on, Bugs finds various Looney Tunes characters who agree to join him in his quest (usually by defeating them), and you have to use their various abilities according to the situation.
The original game was soon (i.e. five months later) followed by a sequel, Martian Revenge! (also known as Looney Tunes: Marvin Strikes Back!), where you get to control Marvin as he comes back to Earth, this time in order to get his revenge on Daffy Duck, who took all the credit for defeating him in the first game and ended up making a movie where he was making fun of him.
Tropes applying to this game:
- Adaptational Badass: Marvin in the actual Looney Tunes cartoon is an Ineffectual Sympathetic Villain who gets easily owned by Bugs most of the time. This game portrays him as an actually quite threatening and effective opponent, who proves a match against Bugs in a fight and even Out-Gambits him at one point.
- To an extent, several characters are made more powerful and given some skills so they can be of some use; for example, Sylvester is given the ability to do karate kicks.
- Betting Mini-Game: The Cybercafe minigames. Of course, you can play them without having to wager items or characters.
- Catching Some Z's: Whenever you stay in an inn. Played straight for Bugs, but for Marvin, he snores some Xs.
- The Computer Is a Cheating Bastard: A lot of characters you fight are a lot stronger when you fight them than when they join you. Some of them, like Daffy or Hazel the Witch, even possess attack moves only when you are fighting against them, while they are limited to useful but harmless powers when you are controlling them (Daffy can actually use his attack move in the fight against Porky Pig, but even then, it's much less effective than it is when you fight him). K9 can shoot teeth-like devices for attack purpose when you fight him, while when you control him, he can only jump and enter rabbit holes; Bugs' only abilities as a playable character are to jump and enter rabbit holes as well, while when you fight him as a boss in Martian's Revenge, he can throw bombs at you.
- Defeat Means Friendship: Most of the characters that join you do it only after you fought and defeat them.
- Elite Mooks: Marvin has a whole special category of Martian soldiers armed with laser rifles who can teleport themselves.
- Extended Gameplay: At the end of each game, you unlock the ability to trade characters (both playable and non-playable) with another player who has the other game. Additionally, completing certain sets of characters in the secrets section of the gallery unlocks secret missions, the first of which you'll receive after completing the game.
- Mini-Game: From the title screen you can choose to either play the main game or the following two-player minigames:
- Rock–Paper–Scissors
- Danger Zone: Avoid the flagstones as they turn from green to red.
- Simon Says
- Mini Game Zone: Each town has a Cybercafe you can visit and play Betting Mini Games where you wager items with another player. Upon beating the main game, you'll have the ability to wager characters with someone who has the other game. The minigames themselves are:
- The Ping-Pong Bomb — Play a game of Hot Potato with a bomb.
- The Seeking Fireball — Race your opponent to the highlighted tiles. Whoever doesn't make it gets hit by a fireball.
- The Rainbow Cannons — Step on a color-coded title to fire its respective cannon on your side.
- One Game for the Price of Two: The main story of both games can be played on their own, but when it comes to the secret missions, you need to exchange characters in both games in order to open them.
- Sliding Scale of Visuals Versus Dialogue: The cinematic cutscenes in Martian Alert! have dialogue, but the ones in Martian Revenge don't.
- Big Bad: Marvin the Martian.
- The Dragon: K-9.
- Earth-Shattering Kaboom: As usual, this is Marvin's goal.
- Enemy Mine: Elmer Fudd is one of the first characters to join Bugs against Marvin.
- Evil Laugh: Marvin, in the game's opening.
- Evil Versus Oblivion: Played for laughs; Elmer decides to join Bugs and help defeat Marvin because he realized the world being destroyed will mean no more rabbit hunting.
- MacGuffin: the Teleporter.
- Nice Job Fixing It, Villain: The whole plot starts because K9 accidentally threw half of Marvin’s technology out the airlock, including his Martian soldiers and the various pieces of his teleportation device.
- Nominal Hero: Daffy. The only reason he joins Bugs is because he hopes to get famous for saving the world.
- Out-Gambitted: Marvin eventually tricks Bugs into delivering all the teleporter fragments to him in the climax of the game's first part.
- Token Evil Teammate: Several allies, such as Witch Hazel, Daffy, Count Bloodcount, Wile E. Coyote, and Taz, join you in your quest, either because they feel you are the one they have the most interest in following or because they think they can get food from you.
- Xanatos Gambit: Daffy apparently believes he is doing this by joining Bugs: if Marvin is defeated, he will pretend to have been the one who saved the world and get famous; if Bugs loses, he plans to join Marvin. Surprisingly, the sequel reveals that it worked.
- Bad Boss: Despite the fact you control Marvin in the game, the Instant Martian Soldiers are still enemies. The reason? Marvin reveals at the beginning of the game that he makes a habit to fight them for training. Well, at least he captures them when they are defeated instead of killing them...
- Big Bad: Daffy Duck in the first part of the game; Brainwashed and Crazy K-9 in the second part.
- The Comically Serious: Marvin.
- The Dragon: K-9 and Martian are both co-dragons to Marvin.
- Drama-Preserving Handicap: Right as Marvin reaches Earth, his ship crashes and remains damaged for most of the game to ensure he won't be able to reach Daffy just by flying to his location and justify your need to use Sam's boat like Bugs did.
- Dirty Coward: Daffy; he acts condescending and mocking toward Marvin before each of their fights, but as soon as you defeat him, he will immediatly start begging for mercy and flattering him. Not that it differs from his usual characteristics.
- Enemy Mine: After you defeat him, Bugs agrees to willingly follow Marvin and help him fight Daffy.
- Evil Gloating: Daffy is able to escape Marvin after their first confrontation by catching him offguard while he is mocking Daffy's cowardice.
- I'll Never Tell You What I'm Telling You!: During the fifth secret mission, when Marvin meets the Barnyard Dawg while looking for his Instant Martians:Barnyard Dawg: They're here! I locked them in the farm I did! Now leave me alone or I won't tell you that I've hidden the key in the burrow next to my kennel, I won't... oh, brother...
Marvin: Stupid dog! - I Surrender, Suckers: Daffy's favourite way to escape Marvin, along with Villain: Exit, Stage Left.
- Laser-Guided Karma: Daffy is hypnotized by Marvin after his final boss battle.
- The Man Behind the Man: Subverted; Daffy tries to save his skin by pretending Bugs was this to him, but when Marvin finally confronts the rabbit about it, it turns out to be a lie.
- Read the Map Upside Down: Marvin goes to the wrong castle because Martian held the map upside down.
- Roaring Rampage of Revenge: The whole first part of the game has Marvin doing this against Daffy for humiliating him in a movie.
- Rogue Protagonist: Daffy Duck, one of the playable characters in the previous game, is the main villain in the first part of the game. Justified in that you have changed perspective yourself and your own character is now Marvin the Martian.
- Bugs is also made one of the bosses, though he quickly becomes a playable character again.
- Villain Protagonist: Marvin; his motivations may be more sympathetic than in the first game, but he is still much more ruthless than Bugs and is hypnotizing characters into joining him rather than convincing them (though some of them do join him of their free will).
- Your Princess Is in Another Castle!: Marvin actually defeats Daffy rather early in the game, only for Daffy to pull a I Surrender, Suckers on him, distracting him long enough to escape. You then have to track down his position and fight him again, only for him to put the blame on Bugs, then escape yet again. The game the Marvin's attempt to locate Bugs, which briefly leads him to the wrong castle because Martian was holding the map upside down where he fights Pepé Le Pew, before he finally fight Bugs, who reveals that Daffy was lying. At this point, Marvin finally reaches Daffy and defeats him before capturing him.