PartyDeck

A split-screen game launcher for Linux/SteamOS.

Features:

• 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
• 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