Quake 64

Debug mode:Enter Quake 64Q Quake 64Q Quake 64Q Quake 64Q as a password and ignore the "Incorrect Password" message. A "Debug" selection will appear on the option menu. Level select, all weapons, invincibility, and monster targeting may now be accessed.

Hint: Items, warp, and more:Begin game play on level 3, and reach the area before the elevator, near the end. Platforms with two enemies should be over your character at this location. Kill them, and a cage behind your character will open, revealing armor. Shoot the wall behind the armor to find a warp that will transport your character on the platforms. Go to the platform that contains missiles, face to the right, and shoot the wall. This reveals a secret hallway with another warp, that is actually a trap. The floor will open up, revealing lava. Sidestep to the right and run to the warp as fast as possible to reach the Ziggurat Vertigo level.