It's called Natural Selection and it was pretty cool. I think people still play. https://www.naturalselection2.com/ https://www.naturalselection2.com/ The creat

It's called Natural Selection and it was pretty cool. I think people still play. https://www.naturalselection2.com/ https://www.naturalselection2.com/ The creators went on to make Subnautica. There have been other takes on this concept too, but Natural Selection is probably the closest to your description. BattleZone (1998) was also a hybrid of RTS and FPS but the units were mostly computer controlled.