I actually misread that, so the reason it isn't included at this time on the RPG footer isn't accurate. Just wanted to clarify for transparency's sake that the site at this time doesn't meet the minimum requirements for inclusion (found in second section of blog); however, feel free to re-submit when the site is built out more :)
Oddly enough, the images aren't showing for me at the moment :P But I believe those were added via our old Special:Promote page on each individual wikia. The problem right now is that feature is borked, though a replacement should be coming sometime before the next Ice Age.
If I hear any different or discover a workaround, I'll let you know!