Logic and creativity are not mutualy exclusive. I believe the question is framed wrong. It shouldn't be "abstact vs concrete" but how can those two qualities complement each other? I think the most common misconception that people have is that creativity means artistic, that's not completely true. Creativity is the ability to rethink and/or invent solutions to complex problems, and those problems can be whatever have you: math, music, physics, art, literature etc.
Asking whether a high IQ will help you develop games doesn't really say much because it's an arbitrary number without context outside from the test. Making games require a huge amount of different media that are all interconnected.