Not so bad at all, especially considering it's written in BASIC. Use your helicopter to rescue people by touching them, before they're caught by rival helicopters or trucks. You have a limited supply of fuel. Hold down the FIRE button to fly.
The method of flying is unorthodox enough to be interesting and the graphics -- though simple -- look good enough. It's fun to sit on a platform and wait for people to fly by, meanwhile keeping an eye on the endearingly random movement of the enemies.
My one complaint: trucks can sometime hit you even though you're not touching them. So...stay far away from trucks.