Obtain a Gold Medal on every game and Remix (50 in all) to always have a chance at a Perfect Challenge (on a random game), instead of having to wait some time for the next one to appear.
In Rhythm Toys, there's a toy by the name of Police Call that requires at least 7 medals the unlock. Here, it will give you chance to input a word and if you input the correct word, you'll receive an odd call, mostly comprised of sounds heard throughout the game. Below are the current words known and where to find them:STAFF - Not found in game, must use the Rhythm Heaven Fever trailers to find this oneMATCH - Mr. Upbeat (after you start the fifth set, the light on Upbeat's head will grow and show a letter at a time)BOUTS - Wake-Up Caller (after you finish the first set of flowers it will show one letter at a time)BIRDS - Munchy Monk (during the game at any point it will be on boards, one letter at a time)SEESAW - Kung Fu Ball (when you have to punch the ball, a truck might pass by with it)GOLFHERO - Pirate Crew (after the third trip, it will show itself in parts on the bridge, two letters at a time)
The Police Call Rhythm Toy allows you to enter a code to get a call made of game sounds. Enter one of the following codes to get the corresponding effect.
There are also several endless games made for two-player play. These require to you get Duo Medals from the two-player games instead of relying on your normal Medals. First select the bottom right arrow and then the purple/pink button with the two echoing "A" buttons.
4 games from the original GBA game Rhythm Tengoku remastered! Select the button showing half of a head. (the head of the Dumming Samurai from Rhythm Tengoku)
Rhythm Toys are simple little extras that were thrown in to mess around with. Select the yellow button that has the box with a :) face on it.