Transformers LE.
The amount of toys you get in that game at used prices is insane. Can you imagine what that would cost NOW NIB?
Pretty darn deep code too. Beating both the Autobots and Decepticons is definitely a Half Marathon in a world of 5K-10K-Half Marathon-Full Marathons (not a cargument!!!!!!).
I'm sure there are some that have done it, but man, it's a decently tall order.