After purchased the game will be exported to not installed double click and press install
it starts its download in your library, then you can play it
You are charged when you first buy the game.
Steam version, meaning that any game that you buy runs of of steam engine.
The game is not sold in stores. It is sold on a game selling company called steam. You would need to make a account on steam and buy it there.
You can buy an expansion pack from a store like Wal-Mart for a Sims 3 base game bought through Steam instead of needing to buy it through Steam. Simply go to the Origin website and register your products through there and you will receive a Steam key for your game.
You don't need to buy Skyrim from Steam, but it does need to be linked to your Steam account (by registering the serial code you should have got with the game).
This is false Steam has free games that you can download at anytime the only downside to not buying a game with steam is that you cant send friend requests, but you can receive them.
A lot.
Yes it will only if there is a code that comes with the game that you can enter into Valve's database.
You can buy the game off of Steam. You require a Source SDK game to run Garry's Mod, but Steam sells these games.
No. If you buy it on steam, then you will be able to download it to your steam games library and install it. After you do that, you'll be able to play it on steam. However, if you're on a mac, you can't play terraria. By the way, you have to buy the collector's edition to get a physical copy of the game.
You Haveto Buy It. On Steam Its 6.99