Radar Rat Race takes the gameplay of Rally X and puts it into a rodent context. You control a rat, who must grab all the pieces of cheese in a maze, and flee from all the other rats. Once you reach a barrier in the maze, you are automatically rotated, but you can always manually change direction.
There are red ones who chase after you, and black ones who are activated when you get close to them - both types kill you on contact. When they are close, you can activate a Star Screen to block them off.
The Radar of the title is on the right of the screen, and shows you where each piece of cheese is, although the actual maze is not illuminated, so your next snack might be further away than you think.
April 27, 2022 Subject:
A quick game is fun...
... though after a few games, Radar Rat Race becomes annoying. The monophonic, out-of-tune 'Three Blind Mice' tune is a clue as to what fun awaits. The game plays at a good speed, but the playfield is tiny - possibly if it was larger, it would take too long to scroll. It's a fair clone of Namco's Rally-X, but not a patch on the real thing. Still, it has a quirky retro charm so I'm not giving this one star - it was a classic at the time that it was released. Have a look at Adrian's Digital Basement (YouTube) if you want to see what it looks like on a real VIC-20.