Nintendo of America is now offering free downloadable titles as incentives to customers who register their video games and hardware with its Club Nintendo rewards program.
Members of the program receive points every time they register Nintendo consoles/games they've purchased or take surveys on its official site. Starting this week, they can trade in those points to receive select 3DS eShop, DSiWare, WiiWare, or Virtual Console titles for free.
The initial selection includes Super Mario Kart (Virtual Console), Fluidity (WiiWare), 3D Classics: Xevious (eShop), and Mario vs. Donkey Kong (DSiWare). Those games typically sell for around $5.99 to $7.99 each. Nintendo will replace those offerings with different titles every month.
Source: Nintendo World Report