MESS is a game system and cash register emulator that can be used as a libretro core.
MESS (Multi Emulator Super System) is a sister project of MAME. MESS is a source-available project which documents the hardware for a wide variety of (mostly vintage) computers, video game consoles, and calculators through software emulation. As of version 0.154, MESS supports 786 unique systems with 1,935 total system variations.
These are libretro features, not frontend or standalone emulator features.
|Saves||Save states||Rewind||Netplay||Cheats||Controllers API||Rumble||Sensors||Camera||Location||Subsystem API|
This core has a few options that can be tweaked from the core options menu. The default setting is highlighted and in italics: