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.

This patch changes the algorithm used for generating random puzzles. It also increases the difficulty of the puzzles by adding 20 extra viruses. For example, Level 20 puzzles have 104 viruses instead of 84 viruses.

Note: The original game has puzzles with at most 84 viruses. It is possible to add 4 extra viruses per level, without running into any problems. However, further increases will result in the game entering an infinite loop generating some puzzles. To further increase the number of viruses, a new algorithm is needed.

Database match: Dr. Mario (Japan, USA)
Database: No-Intro: Nintendo Entertainment System (v. 20180803-121122)
File SHA-1: 01DE1E04C396298358E86468BA96148066688194
File CRC32: B1F7E3E9
ROM SHA-1: FF6459BC3AF5743E3D303823999F33D74ABDF1AA
ROM CRC32: 198C2F41