UFO

UFO is a 1-player arcade game for the TRS-80.

The player controls a spaceship located in the bottom center of the screen, which must shoot alien vessels that come one at a time across the top of the screen from the left. This is complicated by wind, which curves the player's shot to the left or right. The player gets a total of 10 shots, and when an alien vessel is destroyed, the wind changes. The game is over when all 10 shots have been used.