The trope page for the video games of the Adventure Time series. There have been two so far.The first, Adventure Time: Hey Ice King! Why'd You Steal Our Garbage?! is an action-adventure game for the Nintendo DS and 3DS with a story by series creator Pendleton Ward.Finn and Jake awaken from a crazy dream involving the Cosmic Owl to find that the Ice King has made off with their garbage for some sinister purpose. Not just their garbage, in fact, but garbage from people all across the Land of Ooo. Our dauntless adventurers must journey from kingdom to kingdom, fighting weird monsters and learning new abilities in order to get their stuff back and get to the bottom of the Ice King's latest evil scheme.The second, Adventure Time: Explore the Dungeon Because I DON'T KNOW! (yes, it's really titled like that), was a major console release, being distributed for Playstation3, Xbox 360, Wii U and the 3DS. Once again Pendleton Ward wrote the story. Unlike the last game, this is more of a top-down dungeon crawler ala Gauntlet and allows four player co-op. You can now play as Finn, Jake, Marceline, Cinnamon Bun, Lumpy Space Princess, Ice King, Flame Princess, The Earl of Lemongrab, Peppermint Butler and the King of Mars(the last three via DLC). The plot this time out has Bubblegum calling the selected character to go explore a dungeon beneath Ooo as prisoners have somehow been escaping from it when it's supposed to be inescapable. So she sends you down there to check it out because, in her own words, "I don't know."Adventure Time Battle Party MOBA has its own page.
The games contains examples of the following tropes:
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Adventure Time: Hey Ice King! Why'd You Steal Our Garbage?!
In the Badlands Dungeon, right before the boss, the Ice King's parting words are "But enough talk! Have at you!". Also, examining Ice King's latest attempt at a Garbage Princess will have Jake describe it as "A miserable little pile of garbage."
For extra bonus points, said boss is Marceline, a vampire.
Jake residing in Finn's backpack is highly reminiscent of Banjo-Kazooie.
Adventure Time: Explore the Dungeon Because I Don't Know!
Action Girl: Marceline and Flame Princess. Lumpy Space Princess...not so much.
An Axe to Grind: Marceline's weapon, here colored more pink than red for some reason. There's also an axe subweapon that starts showing up after Level 40.
Boss-Only Level: Every 10 levels. Some of them are fights, some you have to avoid fights.
But Thou Must: Princess Bubblegum asks the player to make a royal promise not to move her "science table", and will tell the player they must no matter how many times they refuse.
Call Back: Like Why'd You Steal Our Garbage, there are nods to the series all over the place, from Marceline floating around the courtyard with her parasol, to finding a crystal apple in a quest for Tree Trunks, to Ice King making Fionna and Cake ice robots.
Characterization Marches On: The game was developed before, but came out after, Finn & Flame Princess broke up in season five of the cartoon. This is why, when Finn is trying to calm an angry FP down, he calls her "honey".
Charged Attack: Every character has one, some are status attacks, some do damage.
Checkpoint Starvation: Only every 5 levels, which doesn't matter so much at first, but becomes more annoying as you progress into multi-room floors.
Clown-Car Grave: The enemy generators keep spawning enemies until they're destroyed, though its only one every five seconds or so.
Deadpan Snarker: Marceline. Notably, sometimes when picking up food items(which technically shouldn't restore her HP, her being a vampire), she will sigh and mutter "Game logic."
Downer Ending: Bubblegum's "parents", who she's been keeping safe in the dungeon for centuries, disincorporate and die at the end, although they manage to tell her "We love you, Bonnie!"
Dynamic Difficulty: The monsters get tougher and more numerous the farther into the dungeon you go.
Exploding Birds: The dynamite birds that show up beginning in the Ice Tunnels.
Fake Balance: Marceline seems to be this. She has the lowest starting HP and attack power, can't block any physical attacks, and doesn't gain Imagination by hitting enemies, but by eating red food items or absorbing red projectiles. On the flip side, her charge attack charges the fastest, her Imagination move is the only one of the starting four characters that always does damage, she can move while absorbing projectiles, and oh yeah, most of the enemies in the game fire red projectiles, making it perfectly feasible to just float around dodging physical attacks to power up her Imagination attack. Flame Princess gets hit with the other end of the stick; in the cartoon, she's one of the most powerful characters in the world. In the game, she only has one token slot, which greatly limits her effectiveness.
GASP!: The entire party gasps at the end of the game when Bubblegum reveals that the giant mass of goop they just defeated was actually her parents. (Except for Ice King. He wasn't paying attention.)
The Grim Reaper: If you get to the end of a level that has a locked door on the exit and dawdle too long, Death will growl "I see you!", then appear and try to blast you with a golden beam that pulls you toward him. If he touches you, you lose three Thumps.
Warp Whistle: Bubblegum's holo-pendant, which she can use to send you to any five-increment level(1, 6, 11, 16, etc).
Wham Episode: While it was already established in the episode The Vault that Bubblegum was very old. This game goes into more detail revealing she's 827 years old. As well as the fact that the blob seen in Simon and Marcy is being kept down in the dungeon and Bubblegum indeed had formed from it.
What the Hell, Hero?: Princess Bubblegum gets this treatment for trapping Flame Princess and the Lemongrabs in the dungeon, and for protecting the Gum Monster.
Zerg Rush: All remaining Goo Monsters will charge the player at the end of level 50.