Zoo Keeper is a match-three puzzle game developed by Success Corporation, released for the Nintendo DS in 2004. Players use the system's stylus and touch screen to swap adjacent animals on a grid, forming horizontal or vertical chains of three or more identical creatures. Matched animals are removed from the board, causing the remaining pieces to fall and new arrangements to form. The core mechanic is straightforward and accessible, built around the DS's touch interface in a way that makes stylus input feel natural to the gameplay. The title features a visual style crafted by the Japanese developer that gives it a distinctive aesthetic. The game's simple rules and pick-up-and-play structure make it well suited to the handheld format, while the cascading tile system provides the foundation for increasingly complex chain reactions as matches clear the board.
