No,there are also other games like Street Fighter, Scribble Nauts, etc.
The games are on Steam, which is owned by Valve
Most of them are sold on Steam by Valve Software.
They don't. Only games distributed and managed by Steam can make use of the Steam API.
The function of steam stop valve to supply steam to steam maniform and the function safety valve to prevent the steam high pressure over.
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 you can add other games you have on your computer open up steam click top left conner bring down a scroll bar and select add program you can add chat programs other none steam games to be in your library so you can start game right from steam and use steam while playing with friends on none steam game.
If your talking about Valve's Steam client, it's used for getting games by Valve and a lot of other publishers. If your talking about water vapor, if can be used for many things, like powering machines and the sort.
Yes, you can 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.
i recommend the vavle pack valve is the creators of steam if u have good gameing PC tho and garrys mod but u must have some of the valve games to play garrys mod great game!
No, only a handful of games on Steam have this.
There are free games out there on websites and through Valve Software's Steam Distribution Service. Why not google it or check steampowered.com
Yes it will only if there is a code that comes with the game that you can enter into Valve's database.