+Info about Soul Harvest, and some corrections
[[File:Demon Rune.jpg|thumb|right|320px|The demon rune in a [[SnapMap]].]]
The '''demon rune''' is an item in [[Doom (2016)]] which occurs only during [[multiplayer]] and [[SnapMap]] game play. It appears as a floating red pentagram with a set spawn
point. It transforms a player into one of several powerful demons when touched.
When taken, the player who obtains the demon rune will be transformed into a demon they selected before the match. In multiplayer, this transformation lasts for a total of 60 seconds, after which the player will revert to his or her human form if they have survived. Although each demon is powerful in its own right, it is possible for enemy players to kill the player who has become the demon, and doing so will cause the demon rune to drop, where it can be collected by any other player to transform and lay waste to his or her enemies.
The demon rune will otherwise eventually respawn, with its reappearance announced verbally to all players in the game 15 seconds beforehand with the message, "
Demon rune spawning in 15 seconds."
The [[Gauss cannon]] and the [[BFG-9000 (Doom 2016)|BFG]] are
primarily meant to exist as counters to those empowered by the rune.
In SnapMap, the demon rune has no time limit, and the player will not transform back into a human unless they are either killed or are affected by a trigger in the map which changes the player race value back to human. Respawning behavior, if any, is under the control of the map author.