
Originally Posted by
Kaisha
Can install it on as many rigs as you want. Only limiting factor is that you can only be logged into Steam on one system at a time. Granted, if your game has no online component, you can just play it in offline-mode without worry.
In the case of X-COM, it's a DOS-BOX of the original game files, so it has zero reliance on Steam, so feel free to copy its folder over if you please. Also, word to the wide, go into said folder, find the dos-box config file, and double or triple the amount of CPU cycles it has set, game runs like it's on a 386 by default, you want it running like it's on a 486.
If you can though, I'd wait for Steam X-Mas. I got the entire X-COM catalog off it for $2 last year, should be a sale on it this year also.