I didn't see a thread on it, so I started one.
Its a pretty awesome game. So far the engine builder is pretty neat. Complex enough to make it interesting, simple enough to let anyone play.
Plenty of information and good videos that explain how a engine works.
Later they are planning to have a completely adjustable car from the ground up. Body/chassis, suspension and more.
I thought some people here might like to check it out, free demo.
Age of decadence is coming along nicely as well as Dead state.
