Idle God 3
Ruling the world is really not as easy as it sounds. Idle God 3, a simulation clicktoy by Belgarionriva, lets you slowly build a kingdom by gathering resources... and making some difficult moral choices. Not only are you immortal, you're an immortal who may be going through some sort of existential crisis. Will your actions ultimately save humanity, or destroy it? Everything is controlled with the mouse, so just move and click as you desire. Use buildings for their various upgrades, click resources icons to mine, and watch for random resource drops to appear on the map. You can jump start things by giving your clicking finger a workout, or sit back and let the game do its thing, checking in periodically.
Idle God 3 is more story driven than something like Cookie Clicker, which gives it more replayability as there are nine different endings to unlock. (Keep track of your choices in the museum.) As a god you'll have to make some tough decisions on how to keep anarchists who leech resources at bay, and how will you get any monuments built without slave labor? The game does a very good job at letting you know how an upgrade will affect you, which saves you from some fumbling around near the beginning of the game. That's not to say everything is clear right off the bat. It takes time to discover precisely why something may or may not be beneficial to you, and when. Though not whimsical like many of the idle games, Idle God 3 still manages to be compelling while tackling some of the grimmer aspects of godhood, and will keep you playing for days to come.