Outer Wilds: If you're tired of games with artificial systems, (i.e. xp, loot grinds, and other rewards) you'll find Outer Wilds refreshing. It purely appeals to your sense of curiousity. The best time I've ever had exploring.
Brothers: A Tale of Two Sons: Everyone is always talking about the ludonarrative possibilities of games, but they don't know anything if they haven't played this game. It's like 4 hours, the ending is a required experience.