We just released version 1.20 which is the version we used on the IGF showfloor. We made it a bit smoother all around, added an attract mode, and changed the rules slightly.
To take an asteroid now, you will have to plant a tree there. It makes more sense this way and lets the belt be completely barren instead of covered in trees at the start of a game.
Also we added an attract mode, which kicks in if you leave the game in the main menu for a while. You can play while the game is in attract mode, but you’ll have the AI ‘helping’ you and the camera may take on a life of its own. Just quit out to the main menu if you want to play normally.