To those that care, it appears that DooM3 is portable. The drive letter did not change, but a fresh reinstall of XP didn't faze it one bit.

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How much Keefe is in this movie? Miles O' Keefe!

All the old quakes were portable (quake1, quake2,quake3) so hurrah for that.

(So is World of Warcraft, but since its 5G+ you'd need a big stick *g*)

Indeed, Quakes were all portable as well, hence the reason Nexuiz and Warsow are portable too. Alien Arena's got a bit more going on though I suspect it's portable as well. Hurray for iD - they rock.

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How much Keefe is in this movie? Miles O' Keefe!

Small note: though DooM3 runs fine portably, it has problems updating on systems that it hasn't been installed on due to the patch installer's nature. I haven't had a chance to test out my theories, but there are small .ini files written to C:\Windows and they may have something to do with it, but nonetheless I got a regshot of the entire installation procedure and I'll probably end up investigating that when the next update comes along.

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How much Keefe is in this movie? Miles O' Keefe!

your theories is right, but that's if you want to update. I think you can still play the game without updating right?

I have portable Doom 3 Multiplayer (the singleplayer menu won't work, hehehe ), it's work like a charm, no crash whatsoever, but still contains alot of missing textures and sounds (dunno how to figure out which files is needed or not)... and it's about 400 to 500+ MB in size if the files are packed in .PK4 and around 800+ MB if unpacked...

Year,all the old quakes were portable (quake1, quake2,quake3) so hurrah for that.

Yeah, i agree with you!