One more with the niche of this forum, and one that doesn't take that much time (depending on your take on the task), is Paperclips http://www.decisionproblem.com/paperclips/
Games have the ability to let you have a kind of "lived" experience of something. Sure, a good book makes you live the story through the eyes of the protagonist, but adding the act of making choices within a game framework on top of that changes this fundamentally. This more than anything else is what defines games as a medium.
Clicker games are in a way very interesting deconstructions of what it means to be a game. Cookie Clicker started out as a joke making fun of other game mechanics[1]. Which shouldn't be surprising, since some of the best jokes are deconstructions.
[0] https://nickbostrom.com/ethics/ai.html
[1] https://www.dailydot.com/parsec/gaming/cookie-clicker-julien...
This game works so well (within its scope) because of its ability to surprise you with the crazy narrative and convoluted mechanisms it brings in as you progress.