Hi,
this is Chris from McPeppergames.
We started working on a retro endless runner using Corona and the dusk tile engine. This game, and a retro platformer we also have in development right now, are our first two “real” games not aimed at kids only.
Here is a first glimpse of the main character from the upcoming game:
More about it will be posted here in the forums soon, or you can go to our blog for more info on our games: http://www.mcpeppergames.com/blog
If you want to support us please download our apps and games for kids and help spread the word about them. We also appreciate good ratings btw if you like the games 
This will help us a lot developing our first retro games:
Apple App Store:
http://itunes.apple.com/artist/mcpeppergames-ug-haftungsbeschraenkt/id500483218
Google Play Store:
http://play.google.com/store/apps/dev?id=5029755957860459217
Thank you!
- Chris