I hope Retro's game is an RTS, and not a pikmin/LKS style RTS. Wii is the first console with an interface good enough to have a chance at disrupting PC RTS's, and Retro was hired to make games for a Western audience. Still, a good wRPG or even a first person shooter wouldn't bother me either.
A game I'm developing with some friends:
www.xnagg.com/zombieasteroids/publish.htm
It is largely a technical exercise but feedback is appreciated.