One of the funnest (in my opinion) most bizzare games ever made, its a doom skulltag mod (yes, I know skulltag is ancient, the mod was originally made in 2014 and last updated 2017) check it out if you haven’t (btw it’s in italian but not too difficult to understand)
It’s an ISO file, you can open it in WinRAR. to play just run g2.exe
WARNING BEFORE DOWNLOADING! : This game is not for the young or weak-stomached, due to gratuitous violence and tons of blood, guns and gore.