A short list of games that were incredibly successful in certain aspects, but which Outer Wilds makes look almost amateuristic in these same aspects: Super Mario Galaxy, Mass Effect, The Legend of Zelda: Majora's Mask, Breath of the Wild, Metroid Prime.
I can't tell you exactly why I say this or which aspects I'm talking about -- because this is one of those games in which everything is a spoiler and spoilers are especially bad because the whole point is you learning the stuff by yourself -- but I swear this is not hyperbole. This game is incredible. It will make you look at the world, the universe, and your own life in a different way, at least for a while.
I can't tell you exactly why I say this or which aspects I'm talking about -- because this is one of those games in which everything is a spoiler and spoilers are especially bad because the whole point is you learning the stuff by yourself -- but I swear this is not hyperbole. This game is incredible. It will make you look at the world, the universe, and your own life in a different way, at least for a while.