I've looked in every game category that seemed relevant (Shooter, Strategy, even Adventure), and I can't seem to find a game similar to Microbe Kombat and Bubble Tanks. You had small bases and units that were upgradable. Upon the completion of each level you were awarded some sort of upgrade points to use on your organism army (best way I can explain it) or your base.
No, it's not that. That's a very similar game, though. However, the game I am looking for has a more zoomed in camera. It was also like Bubble Tanks where you control your main unit's weapons, etc.
Very similar concept. The bases had turrets as well.