S.Peelman on 19 September 2016
I would suspect the only games that have that logo are new ones released after 2DS was initially released, and older games that got an extra shipment sometime after the 2DS released. I guess the logo appeared on a game-by-game basis depending on when that extra shipment for a certain game happened. Though, the timing isn't really important is it, rather which games got the logo at some point in the first place?
Long story short, I can't really help you beyond the logic, besides seconding Mbolibombo's suggestion to look over at Nintendoage. 
