If you’re playing Cineris Somnia on Steam and want to enjoy it on your ultrawide monitor without stretched or cropped visuals, this guide will walk you through the simple fix. The game doesn’t natively support 21:9 resolutions, but with a quick tweak to the launch options, you can get it running perfectly on any ultrawide display.
Steps to Enable Ultrawide 21:9

Step 1: Locate Cineris Somnia in Your Steam Library Open your Steam client and go to your game library. Find Cineris Somnia in the list.
Step 2: Open Game Properties Right-click on Cineris Somnia and select “Properties” from the dropdown menu.
Step 3: Add Launch Options In the Properties window, look for the “Launch Options” section. Click into the text box and enter the appropriate command based on your monitor’s resolution:
- For 3440×1440 monitors:
-screen-width 3440 -screen-height 1440 - For 2560×1080 monitors:
-screen-width 2560 -screen-height 1080
Step 4: Launch the Game Close the Properties window and start Cineris Somnia. The game should now run in your native ultrawide resolution.
Tips
- These launch options work for any 21:9 ultrawide monitor, including 2560×1080 and 3440×1440.
- If you have a different ultrawide resolution (e.g., 3840×1600), simply replace the numbers with your monitor’s native width and height.
- Make sure there are no extra spaces or typos in the launch options string.
- This method only works for the Steam version of Cineris Somnia.
Final Thoughts
That’s all there is to it! With just a couple of lines in the launch options, you can unlock full ultrawide support in Cineris Somnia and enjoy a much more immersive experience. Have you tried this fix yet? Let me know in the comments if it worked for your setup, or if you run into any issues!