Level 0: Press F1

Level 1: Press Numlock, scroll lock and caps lock

Level 2: Press backspace to delete the text

Level 3: Type ‘open’.

Level 4: Use the scroll wheel of your mouse.

Level 5: Put the mouse cursor in the middle of the chasm and jump onto it. Now you can jump to the other side as well.

Level 6: Hold your mouse off-screen. It’s now possible to jump from block to block to the other side.

Level 7: Press the Window-Key

Level 8: Insert a CD when drive is empty, Remove CD when not.

Level 9: Set system date to 17/11/1989

Level 10: In the game folder create a text file with the name ‘doors’. No quotes, no extension.

Level 11: Press the Insert-key and the Home-key at the same time.

Level 12: Start the calculator (Start/Run/Calc).

Level 13: Remove HKEY_CURRENT_USER\Software\DOORS from your registry.
NOTE: You can use this command-file to do the work for you if you don’t want to use Regedit.  In either case, you change the registry at your own risk!

Level 14: Tricky one. Kill the task doors_vista.exe (or whatever your exe was called.). Do this through Task Manager (CTRL/ALT/DEL or right click on the taskbar).  Now restart your game and replay level 14.

Level 15:  Wait for the music to end.

Game source: A copy of the game was found here on the internet.


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