Setup guide
RiceMod on Linux
How to run RiceMod in LOCKDOWN Protocol on Linux.
RiceLauncher runs natively on Linux. The game itself runs through Proton, and the launcher finds the game’s Proton prefix on its own, so there’s nothing to set up in Steam.
Make sure you have a legitimate copy of LOCKDOWN Protocol purchased from Steam before you begin.
Setup
Play the game through Proton
LOCKDOWN Protocol is a Windows game, so Steam plays it with Proton. Any Proton build that runs the game works, Proton-GE included. If Steam won’t install or start it, turn on Enable Steam Play for all other titles in Steam → Settings → Compatibility.
Download RiceLauncher
Download the Linux launcher and put it somewhere easy to find. Make it executable with
chmod +x RiceLauncher, or tick Allow executing file as program in its file properties.Start the game
Launch LOCKDOWN Protocol from Steam and get to the main menu (or a lobby).
Load RiceMod
Run RiceLauncher (double-click it, or
./RiceLauncherin a terminal). Pick a branch and press Load. It finds the running game and loads RiceMod into it through the game’s own Proton.Once RiceMod is loaded, press Tab in-game to open the overlay.
Troubleshooting
If the launcher says Lockdown Protocol isn’t running, start the game first and press Load again.
RiceLauncher updates itself by replacing its own file, so keep it in a folder you can write to. If it stops opening after an update, download it again from ricemod.com.
Thanks to beans, whose SteamTinkerLaunch guide got RiceMod running on Linux before there was a Linux launcher.