The event is held at the Campus Altes AKH of the University of Vienna, in Vienna's 9th District.
Travelling to the Campus
From the Vienna airport catch the S7 train to Landstraße / Wien Mitte, then the subway U4 direction Heiligenstadt and get off at Friedensbrücke. Finally take the tram 33 direction Josephstädter Strasse and get off at Lange Gasse. One €3.60 ticket will get you all the way from the airport to the university campus.
From the airport, you can also grab the CAT train to Landstrasse / Wien Mitte, which is heavily advertised and hard to miss but it's much more expensive (€11 or €17 return).
NOTE: You can download a map of the transportation in Vienna as a large PDF (1.8MB) to help plan your journey.
The Conference Venue
The main amphitheatre is called Hörsaal C, at the heart of one of the University' Campus Altes AKH. It's a large glass building enclosed within a large inner courtyard surrounded by other University buildings. You can enter the courtyard at most corners, or usually near the Tram stops.
The locations of the Game AI Class and the symposiums are in the same building and the various party locations as well as restaurants are nearby. More details will be posted about those as the locations are announced.