Cheers, glad you enjoyed it. The binary score was mostly to save pixels :) I'd used the whole screen for gameplay and with the player ship going all the way around the edge I didn't have anywhere to put it! It does tie in with the ranking system too though, so you really only need to look at the rightmost bit - you get a new rank for every power of 2. I should have added a decimal score result to the rank screen but ran out of time - the last evening was a huge rush! Thanks for playing.