LocoRoco Midnight Carnival is a 2009 platform video game developed by Japan Studio and published by Sony Computer Entertainment for the PlayStation Portable.

[1] LocoRoco Midnight Carnival is based on a secret carnival-like base, created by the BuiBui, a red, mischievous version of the MuiMui.

The title shows that the LocoRoco were quietly sleeping, while in the background, a BuiBui pulls on a nearby lever (cleverly designed to just look like a star), opening a trapdoor under the LocoRoco, sending them into a chute, taking them into a cannon, which shows the LocoRoco "Boing!"

The cannon sends the LocoRoco into the BuiBui's secret base, the midnight carnival.

It was available via PlayStation Network for Japanese customers whom had purchased the NTT DoCoMo variant of Xperia Play.