I've heard good things about Unity on Linux, so I decided to give the latest beta a shot.
The system has a fresh install of Ubuntu 10.04 and is running the latest WINE (1.3.3) straight out of the box.
CPU: Dual Core 2Ghz Intel Celeron
RAM: 2 GB (Some generic brand)
GPU: Onboard nForce 630i / Geforce 7100
Without touching anything at all, AI War installs absolutely perfectly and runs fairly well. The only issues I've seen so far is my mouse wheel not working and maybe some performance issues. I say maybe because my trusty old laptop (1.6 dual core, 1gb ram, 7300 go) struggles a little with the beta as well.
Here's some proof of my little endeavor in the form of some screenies. All in all, being able to both install and run AI War on Ubuntu and WINE straight out of the box is very exciting.