Cruzes - RetroBIOS¶
| Type | libretro |
| Source | https://github.com/libretro/libretro-samples/tree/master/tests/cruzes |
| Version | v1.0 |
| Profiled | 2026-03-18 |
| Cores | cruzes |
| Systems | game |
No BIOS or firmware files required. This core is self-contained.
Cruzes is an unfinished Picross puzzle game implemented as a libretro core, part of the libretro-samples repository. It is not an emulator -- it is a standalone game that runs directly within RetroArch.
The core sets supports_no_game to true (cruzes.c:772) and valid_extensions to an empty string (cruzes.c:749). The puzzle grid is hardcoded in retro_init (cruzes.c:706-717) via a string literal passed to load_challenge.
retro_load_game (cruzes.c:728-732) only sets the pixel format to RGB565 and returns true. It never reads from the game_info pointer, never calls RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, and never opens any file from disk.
The font data (Carlito-Regular.ttf) is converted to C header files at build time by the ttf2c tool (font10.h, font16.h, font24.h) and compiled in.
No external BIOS, firmware, or system files are needed.
Generated on 2026-03-20T19:12:20Z