I saw Orange Box at the game store the other day for only $15 and I plan on buying it for my 360 but is there anyone playing TF2 on Xbox 360 or is all the action on the PC?

own both on the pc and the 360. Only play the pc version.  And honestly I don't why any one would when the superior pc version is out and get updated weekly.

I did for a good long time after the Orange Box came out and then also returned a few months back.  The amount of players is definitely small, but in a way, it's a blessing and a curse.  On one hand, the players remaining all seem more respectable and team oriented than many other games on XBL, so the community is definitely a good one.  However, seeing as there are few players, you might have problems finding a lobby with a good connection to your area, and/or you'll end up facing or being teamed up with the same people.  
On a side note, my biggest problem with the 360 version is simply it lacks any of the PC updates, so you're stuck with the stock maps/game modes and have no access to any of the class updates.

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I did for a good long time after the Orange Box came out and then also returned a few months back.  The amount of players is definitely small, but in a way, it's a blessing and a curse.  On one hand, the players remaining all seem more respectable and team oriented than many other games on XBL, so the community is definitely a good one.  However, seeing as there are few players, you might have problems finding a lobby with a good connection to your area, and/or you'll end up facing or being teamed up with the same people.  
On a side note, my biggest problem with the 360 version is simply it lacks any of the PC updates, so you're stuck with the stock maps/game modes and have no access to any of the class updates.

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Man, TF2 has evolved so much since its release. How many maps does the Xbox version have? 5? 6? Does it even have King of the Hill or even further back than that, Payload?

TF2 on 360 has 6 maps, and only Capture the Flag and Capture Point modes.
 
I still play it on and off. I've usually only been playing the PC version during updates due ot the sporadic nature of my computer's history with suicide, but I play it quite frequently on the 360. The HD setup helps.

I played it once before I bought it off steam for 2 bucks. If anyone still plays the xbox version only they are missing out on alot.

I would play the PC version, but I don't have the money for one and for two I am not good at PC FPSs in the least and I doubt I ever will.

The TF2 community on Xbox is either, vets who know what they're doing, or total scrubs who play spy without disguising. Nobody plays it though, and once you go to PC, you can't ever go back.

I would love to play it on PC but will I be able to use an Xbox 360 controller for it?

Regardless, for 15 bucks you're still getting HL2, Episode 1, Episode 2, and Portal.  Definitely worth your money. 

" I saw Orange Box at the game store the other day for only $15 and I plan on buying it for my 360 but is there anyone playing TF2 on Xbox 360 or is all the action on the PC? "

" I would love to play it on PC but will I be able to use an Xbox 360 controller for it? "

I wouldn't suggest buying it. There are no improvements for the game compared to the PC version. It's a real shame, because the game is rock-solid and a couple more maps and modes would go a long way. Imo, it could compete with MW2 and Halo 3 in sheer fun factor as an FPS if they updated it. It's just so fun and addicting and it's just cause the game is so fricken fun!