Lutro

About this profile

Detail	Value
Type	libretro
Classification	Game engine
Source	https://github.com/libretro/libretro-lutro
Version	0.0.1, stated in lutro.h
Revision	libretro/libretro-lutro@6224157a615b
Profiled	2026-03-24
Profile	YAML, JSON
Cores	lutro

Technical notes

Lutro is a Lua game framework for libretro implementing a subset of the LÖVE (Love2D) API. Runs .lutro/.lua games. Written for libretro, no standalone upstream.

retro_load_game() calls lutro_load(info->path) to load the game directory or archive (libretro.c:241). The core exposes love.filesystem.getAppdataDirectory to games as the system_dir (filesystem.c:296) but does not load any files from it itself. No BIOS, firmware, or system files required.

No BIOS or firmware files required.

Why no files

The system directory is not read by the core but handed to the Lua game through fs_getAppdataDirectory, so whatever is loaded from it is the game's own content, not a file this core names (filesystem.c:291-303).

Next steps

• Get your files, for the setup you play on
• Every system, and the files each one needs
• When a game does not start

Data as of 4 November 2026.