The game had an add-on pack released called Bloodwych: Data Disks Vol 1 (AKA Bloodwych: The Extended Levels).
A modified map for the first level of the game was produced as a demonstration level, and featured on the coverdisk of Issue 1 of the ST Format magazine.
Bloodwych was followed in 1994 by Psygnosis' Hexx: Heresy of the Wizard.Search on eBay
Additional info about Bloodwych
Input: keyboard, mouse
Distributed on: 3,5 floppy disk, 5,25 floppy disk
Also published for: Amiga, Amstrad CPC, Atari ST, C64, ZX Spectrum
Abandonware DOS views: 9857