Holy cow! My score was 23535, and I colonized all the asteroids.
So far, this has got to be my favorite game on my submission queue. Overall, the game feels really polished - especially for a game made in 48 hours! It has really addictive gameplay (I'm not going to tell you how much time I spent on this before getting my high score :D)
The only nitpicks I would have are these:
- maybe add a minimap. It doesn't have to be complicated, just one that shows the player in relation to the borders of the map
- make the bullets a little more noticeable. The bullets kinda blend in with the stars in the background
Anyways, really well done with the game