Invulnerability



The invulnerability is a powerup that makes the player generally impervious to damage for 30 seconds, during which the colors in his display turn to inverse monochrome. It does not protect the player from telefrags, and is disabled in some areas. The powerup looks like a green sphere with a grinning head inside.

Invulnerability can also be activated with the cheat code idbeholdv.

In deathmatch mode of vanilla Doom, invulnerabilities and blur artifacts never respawn. Some source ports allow flags to be set to allow them to respawn.

Invulnerabilities are included in the items percentage displayed at the end of each level.

Appearance statistics
The IWADs contain the following numbers of invulnerability artifacts: