1. First, download the anti-cheat file by clicking “Anti-Cheat Download” below or copying the URL below into your browser.

Anti-Cheat Download

https://dl.gamebuff.cn/tools/SwordArtOnlineFatalBullet.zip

2. After downloading, extract the files to your desktop or another folder. Then open Steam, locate Sword Art Online: Fatal Bullet, right-click the game, and go to “Properties.”

3. Click “Installed Files” then click “Browse Local Files” to accurately locate the game's root directory.

4. Copy the extracted file SAOFB_Launcher.exe to the game's root directory and overwrite the existing file.

5. After copying, click “Start Game” in Steam to enter the game, then open the GameBuff software and click “Add a BUFF” to modify settings within the game.

Note: If you need to restore files, go to the game properties, click “Local Files,” then click “Verify Integrity of Game Files” to restore files or back up “SAOFB_Launcher.exe” in advance.