Snow Valley is one of three "Battle Stages" in Sonic Riders. With no bearing on the game's Story or Mission modes, the Battle Stages are multiplayer arenas where the Extreme Gear riders must launch attacks at each other, with the aim of being the last one still standing after all rivals are eliminated.
As might be expected, the arena is snowy; combatants throw up huge plumes of snowflakes wherever they go. This is a circular course, with the Air-replenishing Pit Stop right in the center. After a certain amount of time, the Egg Snowman will appear, crushing anyone it hops on.