[PC, Steam] Free: Billie's Wheelie (Was $8) @ Steam

Billie's Wheelie is free for a limited time.

Billie's Wheelie is an adventure racing platformer game, You can play it with up to 8 players Co-op/PvP, Playing as a hamster in his ball trying to beat all challenges, Collecting all cheese pieces for rewards, And beating your friend's time records.

Not many reviews but they all seem positive.

Credit to Hiphopopotamus at OzBargain