Found a Nintendo 3ds Dev System with an unknow game ? "3D Challange"

Okay so I bought a lot of 37 3DS systems for just 475 Bucks as they all needed fixing ( asd I love to have that as a hobby ) but I soon noticed after 5 systems that they were all Kiosk Units and got a bit of a fight with the guy who sold them to me as he meant that he bought them off a guy on a fleemarket in April and I tryed to expain to him that they were probably ones used in stores and just were destroyed after they were used ( Just toren the upper screen off ) and well there were 5 3ds ones and 32 3ds xl ones and well the xl ones nothing special but the original little ones all blue but of 1 of them well then it didnt looked the same way a the others and wanting to get ready to send them back to the seller as I noticed a little thing that there backpannel has been WAY different and expectet it just to be a Japanese version of the 3ds but then saw the date of 2010 ... I pulled the Motherboard out and put it into another system and well there was a broken screnn so I just expectet that somebody f up while installing a coustom firmware ( As I somestimes get there systems ) almost wanting to throw it into the defictive pile as I thought it strange that the background color wasnt blue but black so I put it into another system ( On of mine ) and there it was a DEV MENU and well going though this stuff trying not to screw something up I was very cautius and found a unnamed title called "3D Challange" and I cant find anything to this name on the web / I dont think this game has been dumped yet does anbody have any idea what it is / or if somebody has heard about it allready

 

First of all : How ? Second : Just from the lenght of the "Game" it feels like something that should have been shipped with the 3ds in the h0ome menu or was used to show of the 3ds on E3 or Gamecom or something ( AS it has arround 5 stages and can be finished ( If yu want to speedrun it ) in about 1 mintue and the whole thing has a "Nintendo" feel to it really polished

and the dev unit is a original Model 3ds from 2010 ( Probably a Pre Production one ) So I dont know if it even can handle Unity ( And as It was probably found in Germany / or maybe Europe I dont think that a company over here would make the Japanesse )