Indie game storeFree gamesFun gamesHorror games
Game developmentAssetsComics

Any chance you could add support for UDMF (Universal Doom Map Format) ? they are very easy to create,  there are tons of these maps and some of them are actually very detailed, I really wish I could build a "base" in doom builder and then export to unreal engine to add extra details, thanks.

Maybe. No promises, tho.