I read some of the reviews for this, and wasn't sure it would help my Halo problems. I recently purchased Halo from Ebay. It had some glitches so I proceeded to add the most recent updates I could find (v. 1.5.2, I believe is the latest), but I was still experiencing problematic lag, and more significantly, the game would crash completely at random. This was especially bad when I was hosting online games which I do regularly. I decided to give the Universal Binary a shot. It has worked wonders for reducing lag and I have not had a crash since.

Keep in mind that I play online multiplayer almost exclusively, but given the quality of the upgrade, I see no reason why the UB wouldn't help all aspects of the game. I've got a late '06 model mac mini, with Tiger, 1.83 Ghz Intel Duo Core, 512MB RAM.

UB seems to me like an excellent upgrade!