It's been sometime since Mario AND Luigi attempted to save the Princess and the Mushroom Kingdom together, hasn't it? Wouldn't it be grand if Luigi was at least somehow involved in Mario's latest adventure, Super Mario Galaxy? Well, thanks to some detective work (aka looking closely at screenshots) it seems he might be.

A reader from blog "Go Nintendo" was able to spot Luigi in the background of this photo (blown to epic proportions above). It looks as if Luigi is trapped in a cage of some sort, with Boo Suit Mario needing to free him. Now, I personally believe once Mario finds Luigi, it turns out nothing but a ruse to trap poor little Mario.

Cameo, secret playable character, or just some Boos playing a trick on Mario? You decide!

Link: Go Nintendo