Sigil addon - DOOM CE mod for Doom II

PSX DOOM and DOOM 64 total conversions for GZDoom, overhauled. This mod builds on the existing total conversions of PlayStation DOOM and DOOM 64 for GZDoom, PSX DOOM TC and DOOM 64 Retribution, to take advantage of the latest GZDoom versions and add many features that make them more faithful but were impossible to implement at their time of release. To achieve this, a large amount of the code has been adapted from GEC Master Edition (also known as DZDoom), while looking at the reverse engineered code and existing source ports of these games for reference. In addition to that, the mod is highly modular and contains many *optional* "enhancements" that deviate from the original experience. Depending on your preference, you can choose to play as close to vanilla as possible, or experiment and play with upscaled textures, PBR materials, flashy particle effects and other features that are common in other GZDoom mods.