Gantry

Two gantries face each other across two eroding walls. Each player moves a gantry up and down and fires one shell at a time across the field. A shell that strikes a wall knocks out one block of that row, the block nearest the shooter's side, so a hole can be opened and fired through. A shell that strikes the other gantry damages it, from minor to medium to severe to scrap, and the first gantry reduced to scrap loses. A hit freezes play for the explosion.

In a one-player game you are the left gantry and the computer the right. The LEVEL setting, EASY, NORMAL or HARD, changes only how fast the computer reacts and how well it aims. The speeds of the gantries and shells were traced from the original machine code, and the field is scaled to the ColecoVision screen. The music, Gantry March, was written for this version.

Controls: in a two-player game controller 1 is the left gantry and controller 2 the right. The stick moves your gantry up and down and the button fires. On the title, stick left or right picks the level.

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 faithful adaptation of the original program. From RUN magazine's September/October 1989 ReRUN disk: original Commodore 64 machine-language program by Colin Adams. This is a modern homebrew adaptation, not a commercial Coleco release.