The UsaRiva -Rabbit's Reversi game includes Mochiusa, a strange character with a soft and pudding-like body. The game offers three gameplay mode such as story mode, free mode and VS mode. In the story mode, square off for the island by the Mochiusas by clearing all five stages. In the free mode, it will allow you to play Reversi with the COM and select three levels of difficulty. In the VS mode, two players can compete with each other.