>>715703287 (OP)There's the latest fps one which is "ok" but not got much soul. There's a much older 2005 FPS that you will no doubt have bugs and issues trying to run but I enjoyed it for a shooter of its time:
https://www.myabandonware.com/game/starship-troopers-civ
You have the latest RTS which is really basic and not complex for an RTS but is enjoyable. There is the much more autistic older Terran Ascendancy (2000) tactical RTS (no base building, you control and customise a platoon) that is very enjoyable. It's also free abandonware:
https://www.myabandonware.com/game/starship-troopers-bgx