I don't understand why everybody on this site is obsessed with pointing out games that are similar to each other. How many 1st person shooter games are there for xbox ps3. A lot and all of them are basically the same as doom, but nobody says there a rip off of doom. In the rts genre there is not much you can change and I think this game is pretty good. You don't have to buy anything, just be patient!
level 3 is easy at best, the first hard is easy at best than it gets hard but you just go back re-play every level and get hero's, so all in all it is the easiest out of the three.
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 "Caesary"){kind=icon}
 "Stunt Maker"){kind=icon}
 "Bloons Super Monkey"){kind=icon}
 "Drift Runners"){kind=icon}
 "Shopping Cart Hero 2"){kind=icon}
 "The Missile Game 3D HS"){kind=icon}
 "Monster Truck Maniac"){kind=icon}
 "SandStorm Racing"){kind=icon}
 "FMX Team"){kind=icon}
 "Powerpool"){kind=icon}
 "Popebox Racer"){kind=icon}
 "Snotput"){kind=icon}
 "Billiard Blitz 2 - Snooker Skool"){kind=icon}
 "Downhill snowboard 3"){kind=icon}
 "Gravitee"){kind=icon}
 "Protector III"){kind=icon}
 "Hedgehog Launch"){kind=icon}
Thanks! Glad you enjoyed it :)!