The game has been running pretty smoothly for me. Biggest problem i have is falling to my death
The kids are having a great time on the game. They think it's a winner so far.
The materials look great and we are still learning the characteristics of each. Pushing blocks around is a real novelty. I love the idea of things failing structurally, and had some very funny colapses already. Digging the bottom of a tree makes it all come crashing down.
The game controls can use a little work, but for an alpha not bad.