Nintendo has announced that Dr. Mario World will be ending its mobile version of the puzzle-game series on November 1st. The in-app diamond currency sales have also ended today. It was released a little more than two years ago and is the first mobile game from Nintendo to be discontinued, unless you include the Mii-themed social networking Miitomo.SensorTower data collected six months after Dr. Mario World's launch shows that Dr. Mario World was the least successful Nintendo smartphone game in terms revenue performance. Super Mario Run was also included in this list, which is why Nintendo decided to go freemium. Fire Emblem Heroes is still the company's most successful mobile game, and generates more revenue than all its other games.Although Nintendo tried to make Dr. Mario World a potential monetization tool rather than a direct translation from the NES-era gameplay, it didn't seem to have enough users to justify its continued operation. The mobile games account for only a small portion of Nintendo's overall earnings. Last year, the company attributed 3.24 percent to mobile and IP-related income. This includes licensing deals. The Switch is responsible for almost all other income.