Dr. Mario is a puzzle video game developed by Nintendo and released in 1990. In this game, players control Mario, a famous character from the Super Mario franchise, who is now a doctor. The objective is to eliminate colored capsules by matching them with viruses of the same color, creating a fun and engaging gameplay experience. The game features various levels and speeds, challenging players to think strategically as they clear the screen of viruses. Dr. Mario can be played solo or in multiplayer mode, making it a popular choice for both casual and competitive gamers.