Tetros - Tetris that fits into the boot sector.

TetrOS is a compact Tetris clone written in Assembly that fits entirely within the 512-byte boot sector of a drive, requiring only 446 bytes and running before any operating system loads. It can be executed using an emulator like QEMU or directly from a USB stick by overwriting its boot sector. The game features basic controls, unique colors for each brick, and game over detection, but lacks scoring, intros, and speed increases due to size constraints. The project includes source code for compilation with NASM and links to similar minimalistic boot sector games.