Nintendo 3DS

So according to Nintendo, these are the two ways, both require an online connection obviously... Just wanted to post an official link so people who aren't getting any confirmation will see they've done enough to get in.

http://www.nintendo.com/consumer/systems/3ds/en_na/3dsambassador.jsp?menu=how&submenu=ctr-ht-amb-20-free-games
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"The greatest trick the Devil ever pulled was convincing the world that he didn't exist..."
"And like that... *poof* he's gone."