Dr. Mario World is a mobile puzzle game developed by LINE Corporation, released in 2019 for Android and iOS. Players take on the role of a doctor tasked with eliminating viruses by dropping colored capsules onto a playing field. Matching three or more objects of the same color in a horizontal or vertical line clears them from the board. Each stage presents a distinct arrangement of viruses that must be fully removed using only a set number of capsules, requiring careful planning and deliberate placement rather than quick reflexes. The game draws on the classic Dr. Mario formula and translates it into a stage-based mobile format, where the fixed capsule supply means every move carries meaningful consequences. Progress depends on efficiently reading each configuration and finding the most effective sequence of matches to clear the board within the given constraints.