PLAY COINS glitch!
if you go on system settings and go on current time put 23:59 and in 1 min you can walk another 1000 steps or just add a day forward and you can walk another 1000 steps this work with other time operated games WARNING : BEWARE THIS WILL MESS UP ACTIVITY LOG
Unlimited Play Coins
Go to System Settings, then Other Settings, then Date & Time, then Date, and then change the date to 1 day ahead. Then go back to the Home Menu.
Hidden Game & Watch Mini-Game.
Open any file on 3DS Sound and scroll through the visualizers until the game appears.
Hit a soccer ball to earn points! This also records your top score.
If you gently blow into the microphone while hovering over the System Settings icon, you will be able to see the little Internet Settings Helper on the back of the icon as it spins.
Speed Up Time (Streetpass Mii Plaza)
Simply hold R and the Streetpass games will go twice as fast!
If you blow into the microphone, The icons on the home menu will spin faster depending on the force of your blowing.