Wow, that plays really well on my system. Definitely need to find more games...As a guy in his "second childhood", I enjoy gaming a bunch. I just last night finished Doom 3 in XP Pro.
After completing Doom, I found "OpenArena" here on the forum. OA uses the Quake 3 engine. I have only played it for a short time, but it seems to be fun. I'll play it more tonight.
Here is a link to get OA:
I hope to find more games like this for Ubuntu.