The schedule of the lecture part of the Game Design course is following:
15.9. Petri Purho - Prototyping
22.9. Mikko Rautalahti - Narrative Design 1
29.9. Mikko Rautalahti - Narrative Design 2
6.10. Antti Tiihonen - Level Design
13.10. Jasmin Dahncke - UX Design
20.10. Petri Ikonen - Mobile Game Design and Production
The sessions will usually be from 13.15-16.00, with the exception of the 15.9. session, where the students who also have taken the game design workshop should come early (12.30) and be prepared to stay until 17.00.
Also, the Q&A part of the lectures often goes overtime, so in that sense you may want to reserve the time all the way until 17.00 just in case.