Available to play

Retromod 2.0 (and GNES / GEMU) — ckosmic's Garry's Mod emulators

A lineage of in-game console emulators for Garry's Mod, from GNES (2016) to the RetroArch-based Retromod 2.0.

What it does

ckosmic built a series of Garry's Mod addons for playing retro console games on in-game screens: GNES (2016), which ran the JSNES emulator and was billed as the first gaming-system emulator in Garry's Mod; GEMU (2017), a multi-system emulator for NES, SNES, Game Boy, GBA and Genesis; the original Retromod (2018); and Retromod 2.0 (2021), which uses RetroArch as its backend. Retromod 2.0 is the current addon; the earlier ones are kept as history.

How it works

Garry's Mod addons rendering emulators (JSNES, then RetroArch) onto in-game screen entities

Requirements & limitations

Garry's Mod on Windows; Retromod 2.0 uses RetroArch as its backend and needs the user's own ROMs (see its Workshop installation instructions).

Original sources

Evidence limits

The Steam Web API details and descriptions of Workshop items 736083419 (GNES), 945777403 (GEMU), 1457560331 (Retromod, deprecated) and 2438477032 (Retromod 2.0) were reviewed on 2026-10-09; all are public, not banned and owned by the same creator account as G64. No independent catalogue play-test was performed.

Code and releases are linked, not hosted here. Game files and footage retain their owners’ rights.