Installing (you need to install steam and register) and running the application works flawlessly, animations and videos work, sound works. This is using the free radeon drivers with a HD5450 - so no non-free software besides the game itself and steam necessary!
What does not
Game is slow to load new scenes sometimes, but might be because I got a computer at the very lower end of the hardware requirements (pcie 1.0 radeon HD 5450 with 512MB DDR3 ram, pentium 4 era dual-core processor). Sometimes the sound stops working, quitting the game and restarting fixes this. This seems to be related to steam advertisements popping up.
What was not tested
|Operating system||Test date||Wine version||Installs?||Runs?||Used|
|Current||Ubuntu 10.04 "Lucid" i386 (+ variants like Kubuntu)||Jul 18 2012||1.4||Yes||Yes||Silver||an anonymous user|