The Grim Adventures of Billy & Mandy video game pits the characters from the popular Cartoon Network television show against each other in an adventure-fighting game, filled with mayhem and chaos. In battle mode, up to four players can use a multitude of weapons in destructible arenas like the Desert of Doom and the Underworld to battle it out to be the last one standing. Players also have the option to play on their own or with a friend in adventure mode, a series of 40 story-based missions where players can unlock new weapons and additional playable characters like Irwin and Hoss Delgado.
- Whether players use Billy's berserk attack or Mandy's deadly smile, all characters feature unique abilities based on their personality
- Mission Mode can be played as either a single-player or a two person cooperative game -- takes players through 45 missions with unlockable rewards & new characters
- In battle mode, up to four players can choose characters, arenas, weapons and battle parameters to unleash a fierce competition to be the Last One Standing
- Features the unpredictable environments that Billy, Mandy, Grim and Irwin visit in the show -- from Billy's house to the Afterlife to Toadblatt's Coliseum
- Players can smash objects, destroy environments and battle in eight fully interactive arenas