Soniclash! is the first minigame in Sonic Battle and is unlocked from the beginning.
The minigame is centered around an arcade/pinball type gameplay, where players bounce around a pinball-like arena, rolled up in Spin Dash formation to knock each other off the ring. This minigame is only playable in multiplayer mode, across up to four different Game Boy Advance devices.
- Big the Cat makes an occasional cameo, sitting on the edge of the arena and fishing.