Cpa network for offer wall and points system ?

Hello,

I want to make a website where people can complete incentive offers for free games.
But i need a big offer wall for them to complete and a point system that saves points from the offers they completed. They're going to use those points to buy games.

Can you please recommend me any Cpa network that can help me with my idea ?

cpalead, adworkmedia both have offer wall or point system

i need an offer wall that integrates any cpa offer i choose... anyone?