"MetaDoom is a gameplay mod that attempts to merge in elements from every Doom game ever made into something loosely resembling a cohesive mass, with Doom 2, 3 and 4 elements standing side-by-side and often merged together in new and interesting ways. And then the obscure stuff, like the mobile games and console ports, get thrown in... then the resulting mass of flesh and guns gets thrown into a blender for five minutes. Serve with a clove of garlic."- From official zdoom forum page.
Authors youtube channel: https://www.youtube.com/channel/UCSStSyaUg7rbNwyQPl2lKFQ
Map pack(community chest 3): https://www.doomworld.com/idgames/levels/doom2/Ports/megawads/cchest3