http://www.sloperama.com/advice/designprep.htm
Here's a list of things you MUST study (as classes, not necessarily as majors):
- Physics
- Math
- Psychology
- History
- Drawing / Painting / Sculpture (learn how to make your own art)
- Music Appreciation
- Writing
- Literature
- Mythology
- Foreign language (any language that interests you; especially one from a country where there are game developers)
- Computers (even if you want to design board games)
- Acting
- Playwriting / Screenwriting
- Film Appreciation
- Public Speaking / Debate
- Marketing / Salesmanship
- Management / Leadership (especially, how to inspire and manage people)
It would also be good if you study some of these things too:
- Music (learn how to play an instrument)
- Geology
- Astronomy
- Paleontology / Archeology
- Ethnic Studies
- Biology
- Art History
- Radio / TV
- Drama / Film
- Business
- Fencing or karate (some kind of one-on-one martial art)
- Archery
- Sports (try lots of different sports; find one that you enjoy and get good at it)
- Crafts (learn how to make stuff with your hands and simple tools)