The Longing
This one’s pretty unique. And that’s an understatement. The Longing takes 400 real-life days to complete. And no, you didn’t read that wrong.
In The Longing, you take control of a tiny little Shade who must wait to wake up his king from a 400-day slumber. Once you start the game, a timer at the top of the screen will begin to count down for that long wait.
To pass the time, you can explore the vast underground kingdom around you, read some books like Moby Dick, paint some pictures, interact with special objects, and just walk. However, literally every action is painstakingly slow.
Our little protagonist has no sprint and there is no fast forward button so The Longing takes the cake for a true idle game. Of course, time will continue to pass after you exit the game so The Longing is more of a casual and calming way to pass the time if you’re doing something else.
If you want to dabble in this unique experience, you can find The Longing on Steam.