I don't have a Powerups Rewards, but if anyone has an extra PC code they want to part with I will gladly take it off your hands and you'll get my eternal gratitude and God's good will.
Nevermind, it works even if you have the free Powerup Rewards and not the paid Gamestop thing, so sweet. Unlocked as Deformers for Beta Testing on Steam for me, so not sure if it will be the full version.
I didn't know they had a free version of PUR. Is there any way to sign up online?