Kid Icarus Uprising is an action game created by Nintendo and released for 3DS in 2012. After the 1991 title for Game boy, the series was forgotten for a long time by Nintendo, with the main character Pit making just a cameo appearance in Smash Bros Melee. Homever, it’s likely that Nintendo thought about making a new sequel more than once in all these years. In this scan, for example, we can see a rumor about a Snes Kid Icarus:

and in 2008 some websites reported that Factor 5 was working (it seems without Nintendo’s approval) on a proto for a new Kid Icarus for Wii. However, Factor 5 closed down its american branch a few months later.
In any case, Kid Icarus Uprising was surely in development well before its official presentation, as we can read on the Iwata Asks for the game:
Iwata
Yes. Development did last a long time.
SakuraiAt first we didn’t have the Nintendo 3DS development kit, so we started making it on a PC. Oh, and for a while we were using a Wii to make it! (laughs)
Finally, at e3 2010 Nintendo showed the first trailer for Uprising,which originally it was supposed to be released in 2011. This interesting video, embedded below, documents an early build of the game with quite a few changes compared to the final version, notably the different voice acting, the overall lower quality of the graphics, and a simplistic aiming reticule. Some locations also appear to have a sightly diverse layout.
In the other two videos embedded in this page we can see a proto / test version of the first level. Cutscenes are shorter and it lacks some segments of the stage. The same can be said about the land section. In particular, the fountain was bigger in the proto.

Beta

Final
Kid Icarus Snes scan by Celine
As always, if you have more informations about this game please let us know!
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U64 is an archive with articles, screens and videos for cancelled, beta & unseen videogames. Every change & cut creates a different gaming experience: we would like to save some documents about this evolution for curiosity, historic and artistic preservation.