Thanks for the feedback. Aiming with the small bullets, rotation, or movement seems to be something that needs to be tweaked. The rotation is 16 directions instead of 360 so that might be a factor. Also I have noticed that it takes a second to find an asteroid, especially if it's on the edge of the screen instead of the middle so the color change is a good suggestion. Extra upgrades and content are also good additions since the game is very short.