Play Dr. Mario (USA) (Beta 1) - Early Prototype Version Online Free

This is a rare look at the development of a masterpiece: Dr. Mario (Beta 1) for the NES. While the core mechanics of matching colored capsules to viruses are present, this prototype allows enthusiasts to see early iterations of the game's design and logic. Players can still enjoy the classic puzzle gameplay, choosing between various virus levels and speed settings. The game showcases the foundation that Gunpei Yokoi and the Nintendo team built—a simple yet profound system that would eventually lead to one of the most successful puzzle franchises. For collectors and gaming historians, this beta version provides valuable insight into how Nintendo refined the balancing and music of this 1990 classic.