Updated on June 20th, at 8:16: If you're looking for a relaxing zen-paced game to pass the time, Viridi might fill that niche. The potted plant simulator, originally released on Steam, is now available for free on the App Store and Google Play.
The game also includes other planets to purchase through in-app purchases and add to your nursery.
Far from the
Viridi has more "gameplay" though and is a bit more hands on but wants to make you experience the same feeling: peace.
The idea is to have a haven, a digital place where you can just relax and think about nothing for a couple of minutes. It's a neat genre that is sadly under-represented and one that definitely fits mobile.
It's been out on Steam for quite a while and it's rated "overwhelmingly positive". It's out June 20th on both iOS and Android.