To both replies, there is still the issue of what happens if you miss the window of opportunity to back up the installation of a particular patch version? Even if you can disable automatic patching, you might not be able to revert to a previous patch once the damage has been done so to speak i.e. your game has updated for you and you find out your mod no longer works. Also, this might be more important to some people than others, but keeping multiple copies of an installation might get impractical. Especially if we're expecting civ5 to be in the orders of several GB. I appreciate this is probably only a minor concern though. There are other questions like what it means for PBEM players. This is more in reply to Aramel, because the ability to disable automatic patching does not solve the problem of all competitors in a particular PBEM game having different patch versions installed for use in offline mode, assuming it's reasonable to say that in PBEM games everyone needs to maintain the same patch version. @Aussie in particular, considering this game is steamworks integrated now, could that not mean the install (the noun, not the verb) is a bit more complicated now than it was for civ4? Steam games that I have installed seem to put files in different places in the steamapps folder and nothing about it looks simple to me, where simply copy-pasting them to a different location is possible. I am not sure about any of this though, which is why I'm asking.