I've spent a lot of time this year, and late last year, playing
Cookie Clicker. It's a wonderful and unusual game. The longer you play it, the less it asks of you. Initially, you're tasked with making a multitude of decisions to grow your cookie empire. Towards the end, you just let the game run. You're making steady progress on impossibly far-away goals All you have to do is wait.
I find this property extremely unusual for a video game. Usually, as a game wears on, you're asked to do endure tedium, the dreaded treadmill to reach the next milestone. Think exponentially far apart levels in Diablo 2. Meanwhile in Cookie Clicker, the best coarse of action is to set up the machinery and walk away. This mechanic is a great way to address my video game OCD, where I want to do everything in a game despite my better judgement. Here, it's all very chill, and respectful of my time. While otherwise having the exact same properties as the grind-y achievements. It's like a stepping stone.
Cookie Clicker even has a great achievement, the Lord of Progress, with the flavor text "One can always do better. But should you?"