|Dreamkey Web Browser|
This trick requires a Dreamcast keyboard, and can be used as a replacement for the standard Planetweb browser. Go to the Homepage in the main menu. Once the Chu Chu Rocket title appears, press [Ctrl] + O on the keyboard. The URL bar will appear, which allows you to type in any Internet address.
|Full Pause Screen|
Pause the game and press X + Y.
|Hard Mode Puzzles|
Successfully complete all puzzles in normal mode.
|Mania Mode Puzzles|
Successfully complete all puzzles in special mode.
Successfully complete each of the twenty-five mania mode levels to transform the mice into angels from NiGHTS.
|Save Pictures From The Web|
You can save pictures onto your VMU while using Chu Chu Rocket's Dreamkey web browser. Place the cursor over the desired picture and press X + A on the controller.
|Sonic Adventure Chaos|
Successfully complete each of the twenty-five challenge mode levels to transform the mice into Chaos from Sonic Adventure.
|Special Mode Puzzles|
Successfully complete all puzzles in hard mode.
During a battle game, press L or R to taunt your opponent. Hold L or R to choose which taunt to use. You can also taunt after you have won at the congratulations screen.