Chainmail

Two knights, one red and one green, duel in a walled dungeon. The stick turns your knight to face any of eight directions, the button swings the sword, and the button with the stick walks in the stick's direction whichever way the knight faces. A blow lands only when the knights touch while facing each other squarely, and only if one of them swings: if both swing, the swords clang in a parry. A blow costs the other knight health and throws both apart. Braziers in two corners heal a knight standing beside them, though they burn down and relight slowly. Two pits kill outright. A knight with no health left falls. Duel a friend, or face a computer knight in the one-player game.

Controls: Controller 1 plays the red knight and controller 2 the green knight (in a one-player game the computer plays green). The stick turns; a button swings; a button with the stick walks. Either side button works. On the title, up and down choose and a button starts.

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 70: original Commodore 128 program by Cleveland M. Blakemore. This is a modern homebrew adaptation, not a commercial Coleco release.