We want graphics to illustrate that, even when game developers think they have reached the end, there is still much further to go.
Ideally, we'd like three frames of a similar image:
Image 1) Climbers reach the top of a mountain. This can be one or more climber-they are supposed to illustrate game developers. This can be any style - from simple stick figures to cartoons. You might even be able to eliminate rid of the climbers, leaving only the mountain.
2) The image pulls back, and reveals that the mountain peak that they just reached is really just about half-way up a larger mountain - they have much further to go.
See the attached image - peak 1 and peak 2 provide the basic idea of the . Ignore the "basecamps".
If you are going to attempt to make the image look realistic, the climbers should look elated in image 1, and disappointed when they realize that they have much further to go.
Another approach might be to put some text on each of the mountains, as if the mountains were named. i.e. "Mount Build a Great Game" for the first and "Mount Get Paid through Freemium"
Note that we can be flexible, so will react to your designs.