For anyone who is a fan of idle games, I highly commend Cell: Idle Factory Incremental (CIFI). There's a lot of content to unlock and it always feels like you're making progress toward something.
As a big fan of the genre I do NOT recommend cifi. It has nice polish and a neat general design, but also has strong incentives for leaving the game open and your screen on (for engagement farming) and a whole lot of purchasable (real money) upgrades. and I do mean a lot.
https://octocubegames.com/cifi