Pretty neat concept! Though, I think it would be cooler if our purple guy starts small and slim, and only then grows (maybe in some sort of hangar for more vertical space). Minor negative - "on ground" part feels a bit sluggish since you get larger after picking cores, but not faster (if not slower). Would be cool to see PC also get big and buff, instead of generic "space guy", but that's a nitpick. So far, this is the second 3d game in existence, focused on growth. If it will become something close to Dawn of Corruption (which is extremely difficult, I understand) this would be absolute peak. Hope to see more soon!