Paradise Killer
Paradise Killer is a murder mystery first-person point and click-type game, the kind of game that'd be full of FMV if it came out 30 years ago. Calling it a vaporwave nightmare would be redundant because vaporwave is a nightmare, TV snow and cassette hiss polluted by the AIDS genocide and the Moral Majority and the Cold War; vaporwave music is good to the degree that it's busted, mockery rather than just mimicry of the 15 or so years it looks back to. Writer/musician Grafton Tanner, in Babbling Corpse: Vaporwave and the Commodification of Ghosts, called it music that "dissolve[s] the notion of progress" and "sheds new light on history." There's a beach and some palm trees, but the trees are the wrong color and the beach is haunted.
In the case of Paradise Killer the horrors invoked are cosmic, which fits pretty well. It's all about the attempt to construct a perfect and eternal past-present. Maybe needless to say, sacrifices are required.