Yes, some. Not all of them can be activated on Steam. See the related links for a list of the games that can be activated on Steam and for the instructions on how to activate a game on Steam.
Yes. Since the games are build into the Steam platform, you will lose them. Although, If you purchased a game, you can get if again for free if you Reinstall it.
Yes you can, you import and add non-steam games to your Steam library. From within the library you can launch and run any games, although 'Steam achievements' will only be available for Steam enabled games.
No, but there is a steam function to add non steam games on to your library.
You can't.
No steam is trused programe/site
When you have purchased games they will be moved to the 'library' section of your steam. Here you can manage your downloads and see all purchased games.
Yes. Since the games are build into the Steam platform, you will lose them. Although, If you purchased a game, you can get if again for free if you Reinstall it.
Download Steam and turn it on, you should now see the Steam store, at the top of the Steam app/thing there is in big letters "LIBRARY" hover over that and click "All Games" you should now see the games you own/have purchased.
yes if you have steam account and you have purchased games with it. You can log back into that account if you reinstalled your computer or what not and log into steam again with that account and have all those games still in there just have to redownload them :(
Polti steam cleaners can be purchased at a variety of different locations both online and in-store. These locations include (but are not limited to) HSN, Target and Fruugo.
Stargate Resistance is a Steam licensed product. If you did not purchase it with Steam you can download the 'Steam' program on their website http://store.steampowered.com/ After that you will be asked to create an account. Once you have completed these steps you will be able to register the games CD key with Steam.
Yes, several games in the Medal of Honor series are available on the Steam platform. You can check the Steam store for specific titles and editions of the game.
Well... Your question is not clear to me. If you bought retail games, you don't need it, but if you want you can download steam app and register your game on steam app. I bought COD 4 retail which means that I bought CD at gameshop in downtown. After installed my game without steam app. but I registered my COD 4 on steam app so I can install my COD 4 without CD.
Steam games store your product key on their game server, not your client software. As long as you legally purchased your game and created an account, you will just log in as usual. You do not need your product key again, even if you unistalled the game at some point.
Only if you purchased it through Steam.
Yes you can, you import and add non-steam games to your Steam library. From within the library you can launch and run any games, although 'Steam achievements' will only be available for Steam enabled games.
They don't. Only games distributed and managed by Steam can make use of the Steam API.