Retro Game Challenge is a collection of small games designed to imitate both the look and the gameplay style of classic early-era NES games. That's pretty risky in and of itself, but not unsellable. However, it's also a game based on a show that isn't available in the US, starring a comedian that nobody has heard of.
You know our stance on Retro Game Challenge (100% awesome), but what about people who aren't us? Is a game built around a (for all intents and purposes) nonexistent license going to work? Will people be confused by the Arino character? Or are there enough nerds out there who know all about Game Center CX that it doesn't matter?