Jul 26, 2012  Most games only work on the PC, so you'd probably have to use BootCamp to put a Windows partition on your Mac, so you can switch between MacOS and Windows when you need to. All you have to do is install Steam on your Mac once you get it, and any game that is compatible will be able to be downloaded.

What is a CD Key used for after it is registered? After the key is registered to your Steam account, it acts as proof of purchase for the game as well as proof of ownership for your Steam account. Steam Support may ask for it if you need to establish your ownership of an account. Please note that digital keys that are not part of a game's physical packaging cannot be used as proof of account ownership. It is recommended that you keep your key in a safe place to ensure the security of your account. Why am I receiving the 'Invalid CD Key' error when attempting registration?

If your key is not recognized by Steam, make sure that the key is intended for Steam registration. If a retail or digital game is meant to be registered through Steam, the retail packaging or the email where the key was delivered will mention it. Once you have made sure that the product is intended for Steam registration, check the combinations below to ensure that numbers and letters are entered correctly: • The number 0 (try entering the letter Q, D or O instead) • The number 1 (try entering the letter I or L instead) • The letter O (try entering the letter Q or D instead) • The letter B (try entering the number 8 instead) • The letter G (try entering the number 6 instead) If you are still receiving an invalid error, we encourage you to contact the retailer for further assistance. If the retailer is unable or unwilling to assist you, it is recommended that you contact for further assistance. Why am I receiving a duplicate product code error when attempting to register the key? This error indicates that the key you are registering has already been tied to a Steam account. It cannot be registered again.

If you think that you have previously registered this key to a Steam account, please use to retrieve your lost Steam account. If you are sure that you have never registered this key successfully, you will want to contact the retailer where the game was purchased to obtain a new copy of the game.

If the retailer is unable or unwilling to assist you, contact for further assistance.

Hi everyone, I am relatively new to PC gaming so sorry about the probably old and simple question. Is there any way to make it so that a CD key can be used to activate a game on another PC because I want to be able to play Fallout 3 and CoD4 on my other PC away from home, these are the disc versions and I am unsure if it would be safe to install it on my other PC without cancelling the online or Xbox LIVE functionality, I am completely fine with permanantly uninstalling it from this PC and reinstalling it on the other PC and never use it here again, I am just unsure as to whether it would allow me to reinstall it Thanks. Usually you can install a game any number of times that you wish, unless the DRM prevents you from doing so. Tor browser bundle for mac. An example is the types of DRM that restrict the number of activation you have to lets say 5. Thats not much of problem though because all it takes is to uninstall and unregister the game to redeem the activation. One thing you should be aware of is that playing an online game installed on two pc's at the same time with one cd key may cause problems.

Also if you are talking about a game on for example Steam, then once you activate that game within the service it is tied to it. Download old versions of chrome browser for mac. Meaning you can for example install steam and access your account on a different PC, but you cannot use the key on a second account. CoD 4 isn't a problem and as long as you use the same GFWL account, Fallout 3 isn't a problem either, you just need to transfer your saves and online CoD profile. DanielDust This is true.