Crystallus

A maze exploration game with no enemies. You are trapped in a huge maze of 36 connecting cubicles, each holding a shimmering crystal that rings when you take it. You see only the part of the maze around you as you walk it, one cell at a time. Gather all 36 crystals, and with a rumble a wall cracks open in one of the corner cubicles, and the outer wall opens on the far side; a message tells you which corner. Find your way out of the cubicles, round the corridor and through the hole in the outer wall to escape. A clock runs as you play, and the best time is kept.

Controls: Controller 1 or 2: the stick walks. On the title, up and down choose Start or Credits and a button selects.

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! No. 45, September 1987, page 16: original Commodore 64 program by Bob Blackmer. This is a modern homebrew adaptation, not a commercial Coleco release.