Alientrap announces Autocraft, an upcoming physics-based puzzle game for PCs that will soon head into full development after starting off as a side project (thanks Gamer's Hell). They've launched the alpha as an early access title, saying this "is the type of project that is best built with a community." The Autocraft website is live, offering an alpha trailer, and here's word:

Inspired by games such as Bad Piggie’s and Kerbal Space Program, Autocraft is a game about constructing vehicles and other automatons to accomplish objectives. Currently the game has 21 challenge levels, and a sandbox mode for experimentation. We are still prototyping the design of the Sandbox area and other game modes, but feel the game is fun enough to release to players in alpha now.