Terra Nil – Reclaim the Wasteland by vfqd, elyaradine, TheJunt

I want to share a relaxing game for everyone today.
This is Terra Nil, an “un-city builder” as it were. You’re reclaiming an environmentally-devastated landscape one segment at a time by bringing plant life back to the landscape, expanding biodiversity, restoring the climate system, then leaving no trace of your terraforming behind.

I found it really relaxing and satisfying (not counting my first attempt, which failed horribly).