This mod is based on original Blood game that had his source files lost so no ports of it were made for modern platforms , there are some great mods for other engines that try to recreate the feel of that game. This is a port of original Blood TC that now can run on GFDoom and other engines that require specific changes (merging, mostly) in WAD file itself. No need of original Doom2.wad.
How to install:
1. Download WAD file from source mentoned above
2. Download GFDoom and unzip it anywhere in your phone
3. Put Doom2Blood into GFDoom folder and rename it into Doom2.wad
4. Open GFDoom launcer and select Doom2 as an IWAD file
5. Press “Launch GFDoom” and play