Ok anyone who knows the Earthsiege and Starsiege series might wanna check out instantaction.com it has a mech combat game, a FPS/ Third Person Shooter with jetpacks, along with a few other titles like Marble Blast Online or Galcon. But like a pitchmen I'm including a free bonus, except it's the whole site that's free not a bonus. No pregame ads (or there aren't right now, hopefully it'll stay that way) and no need to register (but it is another free feature). Try it and if you don't like the games they'll refund you for the game (Hmm...I wonder why) 
Here's the #%$#ing list (not actually censored wouldn't want to get reported on my first day)
Fallen Empire: Legions (Tribes-y FPS with a really weird name)
Lore: Aftermath (Mech combat- like Mech warrior)
Galcon (RTS but not in the traditional base thing)
Ace of Aces (Not the best game in the world but better than eating your own ass [Combat Flight])
Rokkitball (How they spell it [Sport thingamagig)
ZAP (Retro style [that's basically what they said] game with flying and blowing up 2d stuff)
Think tanks (Tank combat, your a tank with eyes and a brain)
Marble Blast Online (Action platformer [No idea what that means] but decent fun)
Not out yet:
Racing game (previously called Blur now in private beta)
Metal Drift (Not sure about this one but it's in private beta)
Here's the #%$#ing list (not actually censored wouldn't want to get reported on my first day)
Fallen Empire: Legions (Tribes-y FPS with a really weird name)
Lore: Aftermath (Mech combat- like Mech warrior)
Galcon (RTS but not in the traditional base thing)
Ace of Aces (Not the best game in the world but better than eating your own ass [Combat Flight])
Rokkitball (How they spell it [Sport thingamagig)
ZAP (Retro style [that's basically what they said] game with flying and blowing up 2d stuff)
Think tanks (Tank combat, your a tank with eyes and a brain)
Marble Blast Online (Action platformer [No idea what that means] but decent fun)
Not out yet:
Racing game (previously called Blur now in private beta)
Metal Drift (Not sure about this one but it's in private beta)