Dr. Mario Express is a DSiWare title. It was released on April 20, 2009. The game is similar to Dr. Mario Online Rx and costs 500 Nintendo Points to download in the DSi Shop. This version of Dr. Mario has received a mixed reception mainly due to it's lack of a multiplayer mode in the game. The game recived a update via the DSi shop on December 7, 2009. It is unknown what this update includes. Dr Mario Express is a Puzzle game like Tetris, for example.
Dr Mario Express