Adventure Time: Explore the Dungeon Because I Don't Know! (stylized as Adventure Time: Explore the Dungeon Because I DON'T KNOW!) is a 2013 action-adventure game developed by WayForward Technologies and published by D3 Publisher in North America and in PAL regions by Namco Bandai Games for PlayStation 3 Xbox 360 Windows Nintendo 3DS and Wii U. It is the second game based on the animated television series Adventure Time following Hey Ice King! Why'd You Steal Our Garbage?!! (2012). The game includes voice acting from major characters and four-player cooperative multiplayer except in the 3DS version which has no multiplayer.