It's likely in the same location as the D&D stuff, which is the board game section. If a kid is looking in that section then I'd say there is a good chance that they'll know they need more than one person.
I don’t know if the picture itself has an impact but Fred Hicks did a post about cover design and product placement in a store sometime in the past year that shouldn’t be too hard to find on his Deadly Fredly blog. It was pretty interesting.