Power 3D

Power 3D is the underlying 2.5D first person graphics engine written by Kevin Stokes and used by Lethal Tender (1993), Terminal Terror (1994) and the 3D Game Creation System (1995, 1998, 2001) and associated games. Originally inspired by Wolfenstien 3D by id Software, it featured several features beyond it including diagonal walls, multiple wall heights, stairs and height blocks. It also featured several then singular gameplay features for first-person shooters such as an inventory system, the ability to pick up written notes, and more. It remained however grid-based, unlike the sector-based designs of the Doom, Build and Jedi engines. In this sense, it was somewhat similar the early grid-based draft of Build created by Kevin Silverman pre-June 1993.