This is the absolute gold standard of incremental games. Everything feels polished. Well paced and constantly unfolding, always giving you something to do. Unrolls its mechanics at a good clip. Completely reinvents itself not once but twice, and the new gameplay is just as fun as the old, and the shifting goals remain scrupulously on theme. Gives you a prestige mechanic once you finish the story, with even greater goals, but each individual run is just hours long. The one complaint many people have is that it's possible to soft-lock yourself in the third phase; check its subreddit if you get stuck. But that complaint aside, this deserves every bit of its reputation.