Here's the easter egg in Tony Tough and the Night of Roasted Moths. Prograph calls it a "bonus level",...
Spoiler:...but there's nothing to do there except look at the artwork. This was confirmed in an email they sent me.
I captured the full-length, so you can see everything. The picture contains a slight spoiler.
http://www.madrabbit.net/temp/tony_tough_ee.jpg
