https://store.steampowered.com/app/3400850/Calyx_Demo/
Calyx reminds me of Creeper World, which isn't a bad thing because Creeper World is good (except the latest entry, IXE, was kinda underwhelming, where you are controlling a conventional land army against a constantly expanding mass instead of flying/landing turrets onto them. There's definitely a lot more micro needed since your units can't fly and will get trapped to their deaths if they get enveloped, so you need to keep them out of trouble.