The idle game of all idle games.. Fantastic story, no real p2w (just small QL stuff that you always get later in the game to support the developer) and a nice flow of updates makes it my only long term idle game that I've been playing for 249 days currently and counting. You can do it lazily, have some bursts of "active" play.. It always progresses and keeps you entertained with cool stuff. Small goals and milestones that helps you never feel like it's not going anywhere. <3