Sonic Reversi Hyper

Sonic Reversi Hyper (ソニックリバーシハイパー) is a mobile phone game released as part of the Sonic Cafe service offered by Sega. It is the sequel to Sonic Reversi‎. In this game, Sonic plays Reversi against a variety of opponents, including Tails, Amy Rose, Shadow, and a Dark Chao. Rings are earned as you play, and high-scores can be submitted to a server, with a chance of winning prizes.

Screenshots
]