Original release includes the prequel GLOOM AGA.
 Minimum Requirements: ECS chipset, 68020 CPU, 2MB ram (rather than AGA/2MB as implied by the game being labelled 'Amiga 1200' in the original release contents).
Recommended: Graphics card (with CyberGraphX support), 68030+ CPU, extra memory.
Graphics card and/or faster CPUs support higher detail pixels and higher quality screenmodes for graphics.
 Game supports a quit back to WB option, i-Glasses (for virtual reality 3Dgameplay), window play (for gfx card users only), and null/serial modem gameplay.
 GLOOM DELUXE (one level demo) is available on Aminet (dir: game/demo/Gloom_Deluxe.dms).
Requirements: ECS/AGA chipset, 68020 CPU or better, 2MB ram or more.
 A range of patches and other goodies for GLOOM DELUXE players are also available on Aminet:
(a) Enhanced chunky to planar (c2p) routines optimised for 020/040 CPUs and Akiko (CD32 only) to make the game faster on machines using the native chipset (dir: game/demo/GloomC2P10.lha).
(b) An AGA colour fix for ECS machines with gfx cards (dir: game/patch/Gloomcolourfix.lha).
(c) An AGA patch for window play for machines that don't use gfx cards (dir: game/patch/GDWindowPatch.lha).
(d) Trainers, world/level selectors and cheats that give players infinite lives, weapon powerups, invulnerability, choice between different game levels or worlds and a lot more.