GameFly / GameFly UK has Sonic Generations on sale for $10.19 (66% off). It uses Steamworks, so Steam activation is required. This matches the Steam price when it was on sale for day 1 of the Summer Sale.
GameFly / GameFly UK has Sonic Generations on sale for $10.19 (66% off). It uses Steamworks, so Steam activation is required. This matches the Steam price when it was on sale for day 1 of the Summer Sale.