Ruin is the territory of the Monsterz Clan. It is accessible via the Road to Ruin in the Northwest of the Core, however, Pawz and Bratz must have a passport to enter.
Players can play three different single-player, Monsterz-themed 2D games on arcade cabinets around Ruin: Inferno Attack, Snowball Roc, and Weed Whacker. There are also six multiplayer games available: Arena Combat, Jungle Maze, Kraken's Lair, Lava Catch, Monster Tag, and Rock Attack.