I've been playing Quake3Arena for the past few months, and it runs pretty well on my creaky TiBook400. I'm pretty hooked on the Urban Terror mod, since it's a wee bit (i.e., WAAAAY) more fun than plain vanilla Q3A.
I was planning on picking up Medal of Honor: Allied Assault over the Christmas break, but a couple of things held me back:
how well would it run on a TiBook400?
$75 CDN FOR A FREAKING GAME???!!!???
After that, I was thinking of picking up Ghost Recon, which does run quite well on the TiBook, but there's still the cost. I just can't justify $75 for a game, no matter how amazing it is.
So, I've resigned myself to sticking with a game that I already own. That leaves Q3A, and Unreal Tournament, both of which I picked up a couple of years ago (and with ran fine on a G3/300 with a crappy video card). Q3A runs OK, but a bit pokey, on the TiBook. Well, then... Why not try out UT?
It takes a hell of a lot to install UT under MacOSX. Actually, it's impossible without Classic. WTF? I go ahead and install it, and the patches to bring it up to the latest version, and fire it up. Wow. It runs pretty darned well. Frame rate MUCH higher than Q3A. Should be cool.
A couple of years ago, I played a LOT of UT, and the Infiltration mod specifically. Figured I'd try to install Infiltration and see how it works. Again, installation was a royal pain in the *ss, since it requires Classic, and messing with privs on a couple of directories. Oh, and there's a missing file, so gametypes don't show up. Doh.
Anyway, short story long, I finally got UT:Infiltration working, and DAMN, it's pretty darned good. Nice gameplay, great graphics, and fast action. This might be an Urban Terror killer. Had to fiddle quite a bit to get sound and stuff working, but it's working OK now... Cool.