Beltane

This one drops you into the witch-soldier world of Motherland: Fort Salem, minus the actual show's plot, minus most of its runtime. It's small and it knows it, a quick text-based riff rather than a full campaign.

Play is reading and choosing your way through a short visual novel loop, with real-porn imagery standing in for original art. There's no big narrative arc here, just scenes built around the harem-and-group-sex setup the source leans on, run through a male protagonist's perspective.

The pitch is blunt too: it's a parody made cheaply and quickly, and the creator says outright that support decides whether more of these get made in other settings. So this is less a finished universe than a proof of concept with your wallet as the deciding vote.