Gravinauts

On the planet Arkion, an acid sea covers everything, and gravinauts stay aloft on rocket packs. The button fires your pack and the stick steers, while gravity pulls you down and fuel burns. Rest on ice glaciers or the launch pad in the middle of the sea. Three rival gravinauts chase you: ram one from above and its pack explodes (250 points), but get hit from below and yours does. Fuel tanks worth 5, 10, 15 and 20 units (grey, green, red, gold) stand on the glaciers. Clear every rival and tank for the next, faster wave, under a new sky colour. Touching the acid or running out of fuel ends the game.

Controls: The button (either) fires the rocket pack; the stick left or right while firing steers.

ColecoVision version credited in the source to Claude (an AI made by Anthropic) for Amy Studio, in Amy, the language by Amy Bienvenu, 2026: a reimagined adaptation of the published rules. From Ahoy! magazine, October 1985, page 31: original Commodore 64 program by Cleveland M. Blakemore. This is a modern homebrew adaptation, not a commercial Coleco release.