Only One Free Download
Game Overview
Remember that at the first room you have to find a key.
WARNING: This Game Contains Intense Horror Elements
Enter at your own risk! This game is not for the faint of heart. Prepare to be immersed in a world of spine-chilling terror, where every step could be your last.
Be warned, the darkness holds unspeakable horrors that will test your courage and resilience. Brace yourself for a nerve-wracking experience that will keep you on the edge of your seat. Sudden jolts, eerie sounds, and unsettling visuals will push your senses to the limit.
Dare to explore, but beware! The atmosphere grows increasingly tense, enveloping you in a suffocating dread. Your every decision carries weight, and the consequences of your actions may haunt you.
Only the bravest souls will triumph in this twisted realm. Do you have what it takes to survive? Proceed with caution, for this game will plunge you into a realm of fear that lingers long after you’ve put down the keyboard and mouse.
Remember, this game is designed to invoke discomfort and fear. If you have a history of anxiety, heart conditions, or are sensitive to disturbing content, we strongly advise against playing.
You have been warned.
Installation Instructions
- Click the green button below to be redirected to UploadHaven.
- Wait 15 seconds, then hit “Free Download.” (Free downloads may be slower — upgrade to UploadHaven Pro for faster speeds.)
- Once downloaded, right-click the .zip file and choose “Extract to Only One.” (You’ll need 7-Zip for this.)
- Open the extracted folder and run the game as administrator.
- Enjoy! 🎮 If you see missing DLL errors, check the _Redist folder inside and install what’s needed.
Download Links
Download Only One using the button below.
Setup Guide & Troubleshooting
How do I fix missing DLL errors for Only One?
After extracting Only One, navigate to the _Redist or _CommonRedist folder inside the game directory and install DirectX, Vcredist, and any other dependencies included.
What should I do if the downloaded file is corrupted?
The full archive is 13.44 GB — make sure your download completed fully before extracting. Use 7-Zip to extract the files. If you still see a "file corrupted" error, re-download and try again.
Why should I run the game as administrator?
Right-click the game executable and select "Run as Administrator" to avoid save file issues and permission errors. This is especially important on the first launch.
How do I update my GPU drivers for this game?
The game won't launch — what should I try?
Try running in compatibility mode, install the latest DirectX runtime, or install the All-in-One VC Redist Package.
My antivirus is blocking the game — is it safe?
Antivirus false positives are common with pre-installed games. Temporarily pause your antivirus during extraction to prevent it from quarantining game files. You can re-enable it after the extraction completes.
System Requirements
- Requires a 64-bit processor and operating system
- OS: Windows 10
- Storage: 24 GB available space
Screenshots

