Dr. Mario
Following the commercial success of "Dr. Mario", Nintendo released several follow-up titles. "Dr. Mario 64", released in 2001 for the Nintendo 64, features Wario and several "Wario Land 3" characters, and offers numerous game modes, including a story-focused single-player mode. The game supports simultaneous multiplayer for up to four players at once. "Dr. Mario 64" was subsequently released in Japan in the compilation game "Nintendo Puzzle Collection" on the GameCube. "Dr. Mario Online Rx", released in 2008 on WiiWare, offers online multiplayer via Nintendo Wi-Fi Connection. "Dr. Mario Express", released in 2009 for the Nintendo DSi, does not support multiplayer gameplay. "Dr. Luigi", released in 2013, features Luigi as a playable character and has all the modes in "Dr. Mario Online Rx", as well as a new mode with L-shaped capsules. The latest installment, "", was released in 2015 and introduced power-ups to the series. There is also a mobile game called "Dr. Mario World".