Dr. Mario is a Tetris type puzzle game. Mario is dressed like a doctor and tosses colored pills on top of the heads of the viruses which are your enemies. The goal is to match the colors of the pills with the colors of the virus. When three pieces of the same colored pill touches an enemy virus he will be defeated. The number of viruses you have to defeat increases as you advance in levels. There are also three speed levels (low, medium, and high) which you can beat the game on. The speed at which Dr. Mario tosses pills is dictated by the level you choose. This is a simple yet addictive game, which can be enjoyed by gamers of all ages.

Here is a patch which converts the mapper in Dr. Mario from MMC1 to MMC3.

Dr. Mario (Japan, USA).nes - NOINTRO
CRC32: b1f7e3e9
MD5: d3ec44424b5ac1a4dc77709829f721c9
SHA-1: 01de1e04c396298358e86468ba96148066688194
SHA-256: 30b385456dada4ed242f383c7fabc8200d7529c273bb4c15f8cadda8a2449031