Doom 64 Demos

Similarly to Doom and Doom II, Doom 64 will display built in demos of gameplay upon idling at the main menu for a while. There are three of these demos already unlocked and playable, and a fourth one that requires a secret password.

Demos
The normal demos are of the levels: MAP03: Main Engineering (Doom 64), MAP09: Even Simpler (Doom 64), and MAP17: Watch Your Step (Doom 64). The secret demo is MAP32: Hectic (Doom 64), and the code that you need to enter in order for the demo to play is 3CT1 CD3M 0???.

Trivia
Note that Hectic's demo only plays after all of the regular ones have.

In all of the demos except for Hectic, the marine dies.