DOOM Trivia Questions

Yes, the name was intentionally vulgar. Tom Hall originally named it 'BFG,' which was expanded in the manual as 'Big F***ing Gun.' It has since been sanitized in some versions.

The first episode, 'Knee-Deep in the Dead,' was distributed as shareware in 1993. This marketing strategy led to massive piracy but also huge sales of the full game.

The PlayStation port actually had enhanced lighting and colored lighting effects, but it ran at a lower resolution and had fewer enemies on screen compared to the PC original.

DOOM was primarily written in C, with some assembly for critical routines. John Carmack used C for most of the engine; assembly was only for optimization in a few areas.

DOOM's engine used a binary space partition (BSP) system that did not support true room-over-room. It simulated height changes but couldn't render one room directly above another.

Romero scanned his own face with a flatbed scanner to create the player's pain and death animations. He also posed for many of the weapon sprites, such as holding a chainsaw.

DOOM was indexed in Germany in 1994 for violent content, not Nazi symbols. The game contains no Nazi imagery. The restriction was lifted in 2011 after a re-rating.

This is a persistent myth. There is no evidence DOOM's engine was used by NASA for astronaut training. The confusion may stem from the US Marine Corps' use of a modified Doom II for tactical training (Marine Doom).