Okay, here's the skimmy. Linux is a UNIX-based operating system, meaning it has very little in common with Windows. Including the fact it won't
natively run Windows binaries. So no games...well, see below. L:inux has many, many programs for it however. There are also ports for some games (avaliable at
www.icculus.org , and a UT patch for Linux avaliable at
www.lokigames.com ). UT2003 and U2 I believe come with Linux installers on the disks. Now, if you REALLY want to play games under Linux, you can get WineX. It's $15 (or you can get it free, although it will be unstable and a big pain in the arse), and emulates DirectX (translation: Windows games in Linux, horray!). It is far from perfect however, althoguh it improves every day.
You don't HAVE to use Linux to play games under however. Unlike Windows, Linux has 2 default bootloaders that are quite powerful (LILO and GRUB). I highly suggest dual-booting, especially if you play alot of Windows games.
There are many equivalency charts as well. I suggest looking here to see what programs you may need under linux:
http://www.techimo.com/forum/showthr...threadid=17302
Oh, and if you play Americas Army or Enemy Territory, then they are avaliable for linux too! Cheers!