OlliOlli is the first third-party title to offer a cross-buy on 3DS and Wii U, and it appears users are able to download more than one copy of handheld version.
It's unknown whether the ability to download multiple copies is intentional or if it's a glitch of some sort.
According to Nintendo Life, those who buy a copy OlliOlli for Wii U are able to download the game on multiple 3DS systems which have a Nintendo Network ID registered on the same home console.
After receiving a tip on the matter, the site tested whether this was the case, and found it was able to obtain a free copy of OlliOlli on three associated 3DS consoles.
"We tested this with a Wii U which has three NNIDs registered on it and sure enough, we were able to obtain a free copy of OlliOlli on all three associated 3DS consoles," said Nintendo Life. "This behavior is likely not supposed to be intentional, but if it is a loophole then it is a pretty cool one.
"This is only applicable if you're sharing a Wii U with others and you all have your own 3DS; ie families, house shares etc. Once NNIDs are tied to a system they can't simply be moved, so this isn't really open to 'abuse', as such."
OllliOlli was released on the eShop March 5.