These are my picks when I need a game to relax. Sadly a lot are not "while away the time" kinds of games, but they do make up a catalog that I revisit from time to time based on my mood.
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Flower (short but good)
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Spiritfarer (maybe avoid if you've lost a loved one recently)
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Tetris Effect (if you aren't stressed out by intevitable failure)
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Donut County (mindless fun)
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Journey (does have a couple of mild chase scenes but is consequence-free and can be finished in one sitting)
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Slime Rancher (colorful and productive)
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The Witness (chill puzzle game)
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Firewatch (some dark parts but is very peaceful and meditative)
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13 Sentinels: Aegis Rim (a basic RTS propped up by a very rich narrarive)
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Unravel (cute and beautiful platformer)
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Untitled Goose Game (if your idea of "relaxing" means being the living incarnation of Satan)
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Abzu (relaxing scuba game, maybe not relaxing if you're thalassophobic)
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Civilization VI (just one more turn...)