NukSuCao
Smash Cadet
This is what I'm talking about.
The game is called H.A.V.E Online, I believe. I can't read Korean so I haven't heard of a release date or anything on it aside from the trailer.
If you don't see the similarities between it and TF2, then here's a great example.
It's being called "an embarrassment to the Korean gaming industry" and is causing controversy all over where Valve fanboys exist. So, almost any forum anywhere. I personally believe that this game will be really awesome, and I like that it's not an FPS, but a 3PS instead. That suits the gameplay more, I believe and it should have a lot of features that even Valve hasn't thought of.
Is this going to explode back in their faces, or get some serious followers? I hope it's the latter, cause it looks fantastic.