Savage 2: A Tortured Soul - Free Game Download, Full Version, 100% Free
Like Allegiance (see below), this is another one of those hybrid games where most players take on an action/FPS type role, while a commander plays a more traditional RTS game, selecting units and giving orders—only the units are all controlled by real people. Released for free about a year ago, Savage 2 is still supported (there was a patch in early February). There's ranged and melee combat, siege units, etc. This is the full game, NOT A DEMO! GET IT HERE
This is of the best flash games of the last few years. Fancy Pants Adventures is a side-scrolling platform game with slick animation and clever levels. Once you finish the first world, check out World 2. Honestly, with a few more worlds added this could easy go as a Xbox Live Arcade or PlayStation Network game.