One of the reasons why getting into game design right now is so interesting is the fact that part of the business, of the creative process and of the production is still forming – and in a constant state of flux.
While on one hand, game production teams have grown larger in order to produce even more content (after all, many AAA titles boast to have 50+ hours playtime – which is 25 times as much as a normal action film), other people reduced their teams and are producing awesome games with teams of three or four people.
Jason Schreier over at Wired's Game|Life argues as well that games need auteurs: a single person with a vision for a game, as opposed to "design by committee":
Most games, like most movies, are a massive undertaking involving the work of hundreds of people. But many films — the best, some would argue — are driven by the central creative direction of a single auteur. No matter how many other people work on a project, auteur theory holds that it is possible for a single, strong creative vision to shine through. Bringing such a dynamic to videogames could result in stronger stories, more compelling gameplay — and fewer artistic and commercial failures that result from that well-established enemy of the creative process, design by committee.
And, which is even better, the industry is slowly adapting that as well.