Install Steam version of Darwinia natively in Ubuntu 64 bit

Idle hands end up fiddling with stuff when you have a Linux distro at your fingertips!

So having this game in my steam list led me to wonder if it was possible to install Darwinia on my Linux box without repurchasing the game. Happily, it turns out that it is, though it requires a little bit of fiddling to get running.