My personal favorite is Kerbal Space Program (KSP). It’s amazingly complicated but so much fun to do.
My Favorited thing to do in KSP is making my own crazy rockets and see if gravity will allow my design to leave the planet 
If the creators of KSP see this, I would like to say thank you for your fun time killer game and I can’t wait for the full release!
What are your favorite Unity platform games? you may say your own but I want to know more than that 
Dead Trigger comes with my phone. I like it.
Backyard zombies! JK it is an ok game. Temple run 2 is pretty sick.
Zombieville2
Dungelot has been my go to for the past few weeks.
I’m kind of excited to see what other games folks are playing that came from Unity.
Thank you too for this post!
As for releases, we’ve just got a new demo version out (as in literally a few minutes ago): https://kerbalspaceprogram.com/download.php
Cheers
Dungelot takes first place in my books, but the 2D/3D zombie game in the WIP is pretty good too
Defo got to give it to Kerbal Team fantastic game and excellent showcase for what Unity is capable of.
A.I. War aswell. Great strategy hybrid that just doesn’t get the sales or credit it deserves.
War for the Overworld. Yeah not playable yet but putting it down for my love of the genre and how good it could be.