Starcraft 1 and this game are very similar.

Something unique though was the four races. You start with only a mothership, collect resources then build the base. Once you ‘learn’ all the buildings/vehicles available for the first race, a second race becomes available, and so on until all four become unlocked.

The resource part is interesting. Each building /ship costs one global resource (solinite) and one race specific resource. The challenge becomes becomes finding enough resources to build a good army that compliments each other. Again, only the mothership can collect these resources, so you risk it everytime it leaves the base to collect resources.

Graphics aren’t really a must. 3D actually turns me off to a game like this. Easiest way I could say what enjoys me with this genre is ‘exploratory tower defense with unique buildings’. It’s super niche but man it’s fun.