Monday Night Combat is basically TF2+Tower Defense, pretty fun game in my opinion, worth a buy.
Ooh, free weekend? Time to boost my K/D a bit, then!
But yeah, MNC is an excellent game. True, it's technically a console port... but the developers have done a very good job with it, carefully rebalancing the game so that it works well for the PC. And they're releasing lots of new content for the PC while completely neglecting the XBox players, so that's got to count for something!
You hear dozens of people whining about 'imbalances', but the fact of the matter is, people tend to whine equally about all the classes. (For a while, half the forums were claiming that Assassins were horribly OP, while the other half of the forums had concluded that Assassins were absolutely useless against competent players and their only practical job was to snipe turrets.
) Overall, it seems to be the usual "my class is UP, everyone else is OP" nonsense.
(I'd have a tough time calling it TF2 + Tower Defense, though. Turrets are only notable if you're defending in your base. Now, if you're playing Blitz mode versus the AI, then yes, it's half tower defense.
)