Choose from two factions: humans or bugs. You're locked into a single character with the humans, simulating a FPS/RPG while the bugs are capable of creating hordes to do battle with. The bug faction gives you all the strategical controls you're looking for. Great graphics. The site touts a FPS vs. RTS experience and it is very close to that.
Free, with option to pay for additional features.
Retired Game URL: http://www.battleswarm.net/game/