As many of you might already know, GameCareerGuide.com has initiative they have called "Game Design Challenge". According to them " GameCareerGuide.com’s Game Design Challenge is an exercise in becoming a game developer, asking you to look at games in a new way — from the perspective of a game creator, producer, marketer, businessperson, and so forth.
Every other Wednesday we’ll present you with a challenge about developing video games. You’ll have two weeks to brainstorm a brilliant solution (see below for how to submit your answers). After the two week submission period elapses, the best answers and the names of those who submitted them will be posted.".