Guardian

Your hover guardian flies down a canyon of nested ledges whose colour bands roll toward you, while Earth and a dark moon drift together in the night sky. Alien ships rise from the far end of the canyon and dive at you, each dropping two bombs. Shoot them, but a shot only counts when your guardian is flying at the ship's height: watch the gap between a ship and its shadow. Meanwhile the aliens raise a tower in the distance, one course at a time. When it is complete, its red core opens for a short while: hit it and Earth is saved, and the next level is faster. Miss, and the tower fires, Earth is destroyed and the game is over. You have three ships; a bomb, or a ship at the end of its dive, costs one.

Controls: Use controller 1 or 2. The stick flies the guardian left, right, up and down, and a button fires. On the title, up and down choose 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. 35, November 1986, page 74: original Commodore 64 program by Cleveland M. Blakemore. This is a modern homebrew adaptation, not a commercial Coleco release.