Games Unlock Code
Begin a game from the main menu, and you'll reach the screen where you can select from available titles to play. Now hold START+SELECT+R and press the A button as you continue to hold them. You'll hear a sound effect from The Legend of Zelda, and the games you haven't unlocked yet will become available.
You are awarded stamps for use on Miiverse posts as you earn bits and complete other tasks, as outlined below.
1-98 - Every 1000 bits earned
99 - Clear Super Luigi Bros.
100 - Clear the Championship mode with a Top 10 rank
NES Remix 2 Complete Stamp - Earn all 507 Rainbow Stars
Each game has two alternate frames you can unlock, depending on your performance as you complete its challenges.
Gold Frame - Earn 3 stars in every challenge
Rainbow Frame - Earn the rainbow stars in every challenge
You can unlock various games by earning the number of stars indicated below.
Super Mario Bros. 3 - 1 Star
Dr. Mario - 1 Star
Super Mario Bros. 2 - 1 Star
Kirby's Adventure - 1 Star
Wario's Woods - 1 Star
Punch-Out!! - 50 Stars
Kid Icarus - 70 Stars
Super Mario Bros.: The Lost Levels - 90 Stars
Zelda II: The Adventure of Link - 110 Stars
Metroid - 130 Stars
NES Open Tournament Golf - 477 Stars