BootGame

BootGame is a mere 512 bytes in size, and can be stored entirely in the boot sector of a floppy disk: it boots itself, without the presence of an OS, and doesn't take up any of the available user space on the disk.

The game itself is a take on Air Attack/Blitz: your aircraft crosses the screen from left to right, then wraps back around and descends. Below you is a randomly-generated city block which, alas, stands in your way to a safe landing; you'll have to raze it to the ground by dropping carefully-timed bombs, one at a time. As your bomber loses altitude, it'll crash into any building left standing in its path, and you'll be forced to start over. If you mow them all down before this happens, you'll win as you arrive safely at the bottom-right corner.

Assembly source code is included, plus a utility to install the game on the boot sector of any diskette.