The operating system Tetris-OS is introduced, the functionality of which is limited to playing Tetris. The project code is published under the MIT license and can be used as a prototype for developing self-contained applications that can be loaded on hardware without additional layers. The project includes a loader, a Sound Blaster 16 compatible sound driver (can be used in QEMU), a set of tracks for background music, and a Tetris game variant. At a resolution of 320x200 pixels, graphics performance is at 60 FPS.
Additionally, we can note similar projects UEFImarkAndTetris64, Tetris and efi-tetris with the implementation of the Tetris game for UEFI firmware, as well as a TetrOS boot sector with a size of 512 bytes.
Source: opennet.ru