（Double game engines）
Main game engine and assistant game engine help one another
For improving the game compatibility

Real time save function
Real time save function that when playing game you can store current game status
And you can continue play game when you play again,not need play from start

Real Time Game Guide
With the beautiful and small font so that could display more on the screen. Supports picture guide, then you won't lose your way in a deep maze
 
Full-featured upgrade cheat function
Use .dat cheat format,and user can download easily

Convenient file-operate function
Delete your dislike game files online and game save file can back up online,not need depend on the computer.press “QUICK” button

WI-FI upgrage
Update the r4itt2 by wifi connect www.r4itt.net
The main menu interface to facilitate
ICONS of game,music(movie),intenet.e-mail,MSN.WIFI-UPGRADE,PHONE display on the main screen, operation is very convenient.

Soft reset
Soft reset is very good function that you not need restart nds in game
The function can go back to mainmenu conveniently