The Pyrogeist is a mutant of unknown origin which appears in the S.T.A.L.K.E.R.: Lost Alpha standalone mod and many S.T.A.L.K.E.R. games.

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Appearing as a floating form of heat haze surrounded by a fiery glow, the Pyrogeists appear a lot like their telekinetic cousin. They are easily distinguishable from the latter with their orange glow instead of blue. On death, they explode in a mess of blood and fire somewhat similar to the way Poltergeists die in the later two games.


  • A Pyrogeists' primary and only attack is spawning pillars of fire, similar to Burner anomalies. While hard to shoot or aim at and being generally quite fast, they are far from invulnerable. A couple of shotgun blasts at close range or a couple of magazines from an assault rifle are usually all it takes to get rid of these mutants.
  • No body part is recoverable from the remains when they are dispatched, although they are easy to lure into anomaly clusters and may trigger Artifact Spawns.


  • The Pyrogeist can be a formidable opponent if the player has the misfortune to encounter one of the many "fire-traps" that it spawns.
  • Although robust of constitution, the Pyrogeist can be taken out with pistol fire.
  • In the open, they frequently run through anomalies (or may be lured into doing so) and are quite susceptible to Electro anomaly damage.
  • In the event that one of these opponents 'rests' in a particular area, F1 Grenades or RGD-5 Grenades are very useful aids in defeating it.