We got a first look at Mark Smith's upcoming physics puzzle and construction game Crashtastic last year, but he's been busy working away on new ways to fling an innocent robot into walls with rocket powered cars, and has got a new developer preview to show off his progress.

He says he's gearing up for an alpha release soon, and it's already looking nicely polished and perversely fun. Having Youtube uploading integrated in to the game is a pretty kickass feature, I can't wait to see some of the crazy vehicles people put together.

Crashtastic is coming to PC and Mac, and I think it looks brilliant. More details when we have them.