The sequel to Sonic's 2D action platformer, exclusively developed for the PSP system, features a revamped rival jostling gameplay system for tighter head-to-head competition. A brand new Battle mode allows two players to jump into six different multiplayer challenges by sharing just one disc using the PSP system's Wi-Fi function. Rivalry is further improved with upgraded power-ups and range weapons allowing players to attack or defend themselves regardless of their position. Additionally, card trading and collection in Sonic Rivals 2 has also been revamped with 150 more collectable cards enabling player to customize characters with new track suits, unlock PSP backgrounds, and unlock Cup Circuits.

• Battle Mode: Select from six ways to thrash your rival buddies: Knockout, Ring Battle, Race, King of the Hill, Capture the Chao, and Tag.
• Single Disc Game Sharing: Grab a friend and jump into the Multiplayer action with just a single disc using the Wi-Fi function.
• Intriguing New Storyline. The Chao seem to be disappearing and all eight rivals must work fast to find out who is behind it.
• Three New Playable Characters: Miles "Tails" Prower and two other new characters round out the cast of eight rivals.
• Free Play Mode: Free from rivalry, experience the game in old-school Sonic-style. In this Single-player mode, you can enjoy the challenging map at your own pace!
• Expanded Card Collection: Collect 150 new cards for loads of new options to customize your playable characters.