Choose one game or take the whole collection
Every card in All games has a Download .prg (MiSTer) button. It saves the game directly; no source checkout or build is needed.
For all 51 games, download the ZIP above and extract it. Copy its JR100 folder into games/ on your MiSTer's SD card. The individual downloads and the ZIP contain the same games, with autostart hints already included. The ZIP also includes these instructions and the MIT license.
First-time setup
Use the JR-100 core and your own BASIC ROM. The core's ROM setup instructions explain how to prepare games/JR100/boot.rom. The game downloads include neither the ROM nor a core binary.
Start the JR-100 core and wait for READY. In its on-screen menu, set Autostart loaded program to Yes, then choose Load PRG and select a downloaded game. It starts at its title; press RETURN to play. The games use standard 16 KB RAM, so leave Extended RAM (reset) off.
If autostart is off or the machine remains at READY after loading, type A=USR($0300) and press RETURN. You do not need RUN for these machine-code games. Use the current core if automatic typing is incomplete.
SuperStation One and USB storage
Put the files in the games/JR100/ folder on the storage device MiSTer is actually using. On SuperStation One this may be USB storage rather than the SD card.
The steps above use the JR-100 core's own Load PRG menu. SuperStation One's Console Mode → Load Game needs an MGL launcher; a plain .prg is not that launcher. Follow the core's Console Mode setup guide for that interface.
Controls, credits, and verification
See each game's guide for its rules and Getting started for keyboard and pad controls.
RELIC DIVE is co-developed with JR-800 Web Emulator contributors. Their credit is retained in the collection's MIT license.
All 51 games, including STAR LANCE 4.0.0, have been tested on MiSTer (SuperStation One). On 18 September 2026, the device owner confirmed startup, physical gamepad controls, and sound for every game, using JR100_20260801.rbf.
See the tested versions for the exact collection covered. These checks cover startup, controls, and sound; they do not constitute an all-stage playthrough. Original JR-100 hardware remains untested.