It sounds like you're trying to find a solution or workaround related to multiple instances of a game (e.g., Steam Deck, Asus ROG Ally, or another device) running the same game multiple times—possibly for multiplayer, emulation, testing, or performance purposes. Let’s clarify and address your situation based on common use cases. 🔍 Common Scenarios & Solutions 1. Running the Same Game Multiple Times on One Device (e.g., Steam Deck or ROG Ally) You might want to: Play the same game twice (e.g., for split-screen or bot testing). Run two instances of a game for modding or cheating (e.g., in games like Stardew Valley, The Sims, etc.). 🔹 Possible Solutions: Use Case Solution Single device, two game instances Use Emulators (e.g., RetroArch) or game-specific tools (like Steam Play with -game flags). Running game in background Use --multi or --instance launch options (if supported). Some games accept command-line flags like: steam://rungameid/123456/0/0 (repeat with different IDs). Using Steam's "Multiple Instances" feature Enable "Launch in separate window" and use -console, -no-steam, or -game flags in the shortcut. Manual Launch via Terminal On Steam Deck/ROG Ally (Linux-based), open terminal and run: # Example: Launch two instances of a game ~/.local/share/Steam/steamapps/common/YourGame/YourGame.sh & ~/.local/share/Steam/steamapps/common/YourGame/YourGame.sh -multi & ✅ Note: This only works if the game supports multiple instances. 2. Running the Same Game on Multiple Devices (Steam Deck + ROG Ally) If you're trying to run the same game on both devices simultaneously, e.g., for co-op play or debugging: 🔹 Solutions: Cloud Saves (Steam/Proton): Ensure both devices are logged into the same Steam account and have the same game + cloud sync enabled. Use Steam Remote Play: Stream from one device to another, but not ideal for running two instances. Manual Launch on Both Devices: Use separate launchers (e.g., Steam, Lutris, Playnite) to start the same game on both devices independently. Dedicated Accounts or Profiles: Use different user profiles or profiles per device to avoid conflicts. 3. Running Games in Multiple Instances (e.g., for bots, testing, or speedrunning) For advanced users (e.g., game developers, modders, or speedrunners): Use Proton + custom Wine prefixes (on Steam Deck/ROG Ally). Launch via terminal with different environment variables:# Example for two instances of a game WINEPREFIX=~/.wine-game1 \ WINEDLLOVERRIDES="dxgi,dxvk=1" \ steam steam://rungameid/123456 Use xrandr or winecfg to assign different display settings per instance. 🛠️ Tips for Steam Deck & ROG Ally (Linux-based devices) Enable Developer Mode (Steam Deck: Settings → System → Developer Mode). Use /home/deck or /mnt/SteamDeck/ paths for custom scripts. Use bash scripts to launch multiple instances safely. Use -- flags in Steam launch options (e.g., -- -multi). Try steam://rungameid/123456/0/0 and steam://rungameid/123456/0/1 to test instance IDs. ⚠️ Limitations Not all games support multiple instances (especially single-player titles). Some games (e.g., Elden Ring, Cyberpunk 2077) block multiple launches due to DRM or license checks. Performance may degrade due to limited RAM/GPU on handhelds. ✅ Summary To run the same game multiple times on Steam Deck, ROG Ally, or across both: ✅ Use command-line launchers ✅ Enable developer mode and use custom scripts ✅ Leverage Steam launch options (e.g., -multi, -console) ✅ Use separate Wine prefixes (for Proton games) ✅ Avoid DRM-locked or anti-cheat games ❓ Need More Help? Let me know: The game title you're trying to run multiple times. Whether you want local multiplayer, testing, or just two instances. If you’re on Steam Deck, ROG Ally, or another OS. I’ll give you a custom script or command to make it work. 🎮🔥