A year or so ago I had someone extensively play-test an old version of Fasteroids. They managed to get to the point where the game wasn't increasing in difficulty. With this in mind I decided to change up the UFO enemies a bit - they now have 10 different speed levels. Within those 10 speed levels you'll see one of 4 UFOs:

Green UFOs == Slowest UFOs - 1000 points
Yellow UFOs == Moderate speed UFOs - 1200 points
Red UFOs == Fast speed UFOs - 2000 points
"Special UFO" == Fastest UFO - 10,000 points

The "Special UFO" is double the size of other UFOs, but because of it's speed it's extremely difficult to kill. (The UFO crashing into asteroids doesn't give you points, you have to shoot it).

I also fixed a sound bug that was an issue with the red UFOs.

The next bug I need to fix is an invincibility issue. When you die you should have a few seconds of invincibility, this was happening for awhile, but some of the new code I added must have broken the invincibility. I plan to have it fixed for the next release here.