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
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.
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.
This is an Easter egg that you can do in AR Cards. You need to have purchased the globe (if you haven't, you can purchase it for either 1 or 3 play coins, I forget which though). Go to the globe, and just keep shooting it. You will notice that as you keep shooting it, it will start to gradually turn red, until eventually... BOOM! The entire planet will explode, with nothing to see but just a message, saying "Look after our planet". The funniest part is that after doing this, you have to actually REPURCHASE the globe! XD Could this be some sort of, message? Could this possibly be an allegory on how we don't care for our planet well enough, and that if we don't look after it better, it will be... the END? Man, who knew Nintendo was so DEEP!
When playing any DS/DSi Ware game on your 3DS, push Start and Select while the game is starting up. The screens will be the size of the screens on the original DS/DSi instead of being scaled up to the size of the 3DS screens.
When playing any Game Boy/Game Boy Color Virtual Console game on your 3DS, hold Start and Select while the game is starting up. When the game starts up, the screen for the game will be the same size as on the Game Boy/Color screen, as well as be inside a little Game Boy.
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.