Space Adventure

Space Adventure is a 1-player arcade game for the VIC-20.

Control a small ship that moves vertically and fires to the right to destroy all the incoming aliens. The player has 1 minute to kill as many aliens as possible. The player can speed up, which causes aliens to appear more quickly, but also causes them to rapidly disappear off the left of the screen. The faster the player is moving, the move more each destroyed alien is worth. The player loses 1/4 of their score if they hit an alien, and loses 100 points for each alien that passes them.