From CATACOMB 3D Thanks — Romero, from Romero's Web you can now download the Digital Edition for free with a discount code. I really appreciate it because it lets you slide on walls, and it includes Making Catacomb 3D documentary video and PDF/ePUB article on the History of Catacomb 3D. even though it's the first version 1.00.
Before there were the 3 Big Box Editions 3 Big Box Editions: The Shallow Grave Edition (€69.95) The Stone Tomb Edition (€89.95) And the Ancient Vault Edition (€154.95). And then there was this one for €6.66.