If there's one thing we love, it's incredibly customizable games! Not only do they allow for some great mods, but they usually survive the tide of ever-changing technology much better than games that are locked down. UT99 is definitely one of those. Anyone who can edit a file in Notepad can get it to run in HD even though it came out more than 10 years ago.
I use the texture pack on my own PC and it's definitely awesome, although for the LAN parties I use a separate copy with no mods, just to make sure it doesn't serve those huge textures to some of the older computers in the room.