A Puzzle Bobble clone for the original Game Boy. Fire a bubble, let it bounce off the walls, and pop groups of three or more.
Bubbles stick to a hex grid, so every second row is offset half a bubble. Pop a group of three or more and it bursts on the spot for a moment — then anything left with no path back to the ceiling falls, which is where the points are. Streaks pay more. The multiplier is how many shots in a row have popped, capped at eight: a run of pops on the same four bubbles pays 40, then 80, then 120, up to 320 a pop. A shot that pops nothing breaks it, and every new board starts it over. The score stops at 65535 rather than wrapping — it will never show you a number you have not earned. Each board cleared starts the next one a row deeper — four rows of bubbles at the start, five from level 2 — and the ceiling drops sooner: every 8 − level shots, down to a floor of four. The aim dots trace the shot's real path, wall bounces included, and come from the same code the shot itself runs — so the preview cannot disagree with it.
English draughts (checkers) for the original Game Boy — standard rules, compulsory captures and multi-jump chains, against a built-in machine opponent.
A homebrew first-person raycaster for the original Game Boy: four randomly generated maze floors, keys and doors, grunts, bats and brutes, and three save slots.
A port of the 1983 ZX Spectrum classic to the original Game Boy: twelve eggs, ladders, hungry hens, and seed that stops the clock if you reach it first.
A homebrew pseudo-3D racer for the original Game Boy: three tracks, two rivals plus traffic, hills, bends you can see coming, and 27 lap records saved to the cart.
A lunar lander for the original Game Boy: bring the ship down on a pad, in one piece, without much fuel to spare. Gravity is always pulling, the engine is the only thing that beats it, and fuel is the whole clock.
Asteroids, on a screen that wraps at all four edges. Turn, burn and fire, and keep breaking the rocks down until there is nothing left to hit you
Three tracks, two rivals, traffic, hills and a road that bends towards the horizon, on a Game Boy with no 3D hardware at all. GB Racer is a proper arcade racer in a 128 KB cart.
Four random maze floors, three kinds of monster and a gun, rendered in true first person on a 1989 Game Boy. FPS Dungeon shouldn't work. It does.
We kept rebuilding the same Super Game Boy border kit for every game, so we fixed its bugs, added real tests and gave it away. Here's what's in GB-SGB-Tooling.