A series of games for the PSP. In each level, the player controls a group of LocoRoco, small blob-like creatures which can split up or merge together to form larger LocoRoco. A puzzle platformer, the player must navigate the LocoRoco across the levels to reach their goals, finding more LocoRoco, defeating enemies and rescuing stranded Mui Mui from hidden locations. The main control of the game involves rotating the game world left and right, thereby affecting the gravity and roll of the LocoRoco who only have limited jumping abilities. The games are generally cheery and upbeat with bright colours and strange and excitable characters to meet along the way.