Black Mesa-codex Apr 2026

: Run the game as an Administrator to ensure it has permission to write save files to your C:\Users\[YourName]\AppData or the game installation folder. Gameplay & Survival Tips

: A standard playthrough takes about 15 hours , while 100% completion (including achievements) can take up to 27 hours , according to HowLongToBeat . Black Mesa-CODEX

: To unlock the secret "Pizza" ending, you must carry Dr. Horn's pizza box from the cafeteria in Questionable Ethics all the way to the final boss in Xen, as detailed on the Combine OverWiki . Are you running into a specific error code or : Run the game as an Administrator to