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Split-screen game launcher for Linux / SteamOS adds support for multiple keyboards and mice

By -
Last updated: 14 Jul 2025 at 9:35 am UTC

PartyDeck is a free and open source split-screen game launcher for Linux / SteamOS, and the latest release sounds great. I mentioned it in a previous GamingOnLinux article back in May.

It allows you to run up to 4 instances of a game, supporting both Native Linux and Windows games via Proton. It sets it all up for you, with sandboxing to ensure each instance only sees the control inputs assigned to it and positions the game windows around your screen for you.

Pretty clever stuff, and now with the 0.5.0 release even supports multiple keyboards and mice. You can also now add multiple devices per instance, and there's been a few UI adjustments.

Highlights from the GitHub:

  • Runs up to 4 instances of a game at a time and automatically fits each game window onto the screen.
  • Supports native Linux games as well as Windows games through Proton.
  • Handler system that tells the launcher how to handle game files, meaning very little manual setup is required.
  • Steam multiplayer API is emulated, allowing for multiple instances of Steam games.
  • Works with most game controllers without any additional setup, drivers, or third-party software.
  • Now works with multiple keyboards and mice!
  • Uses sandboxing software to mask out controllers so that each game instance only detects the controller assigned to it, preventing input interference.
  • Profile support allows each player to have their own persistent save data, settings, and stats for games.
  • Works out of the box on SteamOS.

See more on the GitHub page.

Article taken from GamingOnLinux.com.
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About the author -
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I am the owner of GamingOnLinux. After discovering Linux back in the days of Mandrake in 2003, I constantly checked on the progress of Linux until Ubuntu appeared on the scene and it helped me to really love it. You can reach me easily by emailing GamingOnLinux directly. You can also follow my personal adventures on Bluesky.
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5 comments Subscribe

pazzoeo 9 hours ago
Multiple mice and keyboards, wow, I always thought something like this should be possible
My dream is that one day Wayland would allow multiple cursors kinda like how it worked on the Wii, and all the Windows users wouldn't believe their eyes lol
Pyretic 9 hours ago
I kinda want to test how good this thing is, compared to NucleusCoop.

On the one hand, sandboxing is a Linux-native feature, so it should work better than the hacks that Nucleus uses.

On the other hand, NucleusCoop has had so many more years of development behind it, and also works with Epic Games and GOG games.
L0g1calMadn3ss 6 hours ago
  • New User
If only Parsec worked on Linux 🫠
Liam Dawe 4 hours ago
User Avatar
Parsec has a Linux app last I checked?
pazzoeo 2 hours ago
Parsec doesn't work as a host on Linux sadly, you can only connect to other PCs
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