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I've downloaded and installed tf2 from the internet, but it couldn't connect to online servers. So I've also installed steam after that.

Now when I want to play tf2 from inside the steam, it doesn't see the existing installation and wants to download tf2 anew. Can I anyway make steam use the already installed game?

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marked as duplicate by Frank, OrigamiRobot, Doozer Blake, MBraedley, kalina Apr 30 '13 at 16:49

This question was marked as an exact duplicate of an existing question.

...Why didn't you download it through Steam in the first place? – Frank Apr 30 '13 at 14:02
@fbueckert: I wanted to avoid 12gb download, because offline installer is much smaller – Grigor Gevorgyan Apr 30 '13 at 14:03
@fbueckert: thanks for your link, I'm trying now – Grigor Gevorgyan Apr 30 '13 at 14:11
I don't see how an offline installer would be any smaller; it would still have to download and install everything. Unless it was meant to just be played offline, in which case, defeats the entire purpose of TF2. – Frank Apr 30 '13 at 14:12
Steam's downloads are compressed, it just does not show it to you. – user28015 Apr 30 '13 at 14:40
up vote 0 down vote accepted

You could try copying the game files to the appropriate folder in steamapps. I would think that Steam would recognize most of the files as the ones it is expecting.

The copy you would do is something along the lines of C:\Program Files\Valve\Team Fortress 2\ ---> C:\Program Files\Steam\steamapps\~grigorgevorgyan\team fortress 2\

Of course, some of these files are bound to be wrong (like the .exe - the standalone won't have the Steam hooks). So, go to steam and tell it to "Verify Local Game Files..." and wait for it to redownload the different items.

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Well, I thought a <kbd> would look cool, but apparently not. – Riking Apr 30 '13 at 15:36

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