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The short: just play Antichamber and The Stanley Parable (which at time of writing would cost about the same amount).
The long:
I’m a big fan of mind-bending games (been waiting 10 years for one of them), and Superliminal is a game where you play inside your own lucid dream managed by some corporation and a shady doctor whose names I’ve already forgotten. At first, you’re guided through a series of chambers to train you by a dispassionate AI who clearly doesn’t care about your well-being, before you break out into the game proper…wait. *checks notes* No, I’m pretty sure this wasn’t Portal.
The central conceit of the game is a single mechanic – perception is reality. Unfortunately, this boils down to only two things: “the size of an object that you are holding is dependent on how far away you are looking” and “if there’s a weird painting on the wall, stand in the right place to make it an object.” It’s a good basic mechanic that is mostly without problems (I had to reset a level once after getting into an inescapable situation), but it’s never really iterated upon or added to.
The real trouble is that referencing other games only works if you aren’t just making a crayon drawing of a Rembrandt, sticking it in your art gallery, and hoping no one cares. From the Stanley Parable hallways to the Antichamber-esque mechanics to the Portal AI voice, every time I was reminded of one of those three games I wanted to play them instead.
Each one of those games had elements present in Superliminal, but took them and iterated upon them in interesting ways. Here, partly because the game is a (very linear) hour and a half long, each of them is given only token presence. I place this game in Tier Three, avoiding Tier Four because the game did actually have a couple puzzles (rather than hallways where you do the only obvious thing) and it wasn’t slapping you in the face for liking the things which inspired it.