The game appears to be Nintendo's attempt to cash in on the Match-3 puzzle genre - sort of like Candy Crush Saga, if that game made me a little less hungry for gummy bears.
Dr Mario World is a match-three puzzler where you need to use pills to eliminate all the viruses.
Dr. Mario World is the revival of one of Nintendo's oldest Mario-branded ventures, Dr. Mario having been originally released on the NES. The aim is to clear the entire stage, but you'll have a limit to how many capsules you can use, meaning you'll have to plan ahead. You can spend real money on Diamonds, the game's premium currency. Dr. Mario and friends have put on lab coats and grabbed capsules! Dr. Mario World also features other Mushroom Kingdom characters such as Yoshi, Toad, Peach, and Bowser. That means you will not be able to play Dr. Mario World when your device is offline. All the trappings of a free-to-play mobile game are here as well, including stamina hearts that restore over time.
"Hundreds of stages over many different worlds ... with new worlds coming on a regular basis!" In Versus Mode, players can turn up the intensity by challenging others online to a one-on-one showdown in real-time.