8-map hub set in the Black Mesa military-industrial facility within the Half-Life universe. The game is story-driven and features multiple objectives. It uses the excellent textures of Half-Life, sprite-based enemies and non-player characters from Half-Life, models (some of them interactive), true 3D environments and other features of GZDooM. Tested with GZDooM
Graf Zahl for GZDooM, Randy Heit for ZDooM, id Software for DooM, Valve Software for Half-Life Willem Sitters & BlackRayne for many models Patrick 'Janitor' Pineda
8 levels from scratch + TitleMap. Map01 is based on the initial areas of Half-Life prior to the Anomalous Materials Laboratory. We constructed the entire level using in-game screen-shots, i.e., we did not use a Half-Life editor at all.
3 years, off and on, mostly off
Wally for extracting resources from Half-Life, XnView for editing graphics, XWE for resource manipulation, WadAuthor for maps, SlumpEd for pk3 management