One version is common, at least one other version is rare
 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 'A1200 only' in the original release contents). Recommended: Graphics card (with CyberGraphX support), 68030+ CPU, extra memory. Gfx 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.
 A one level GLOOM DELUXE(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).