Shattered Crystal is largely a side-scrolling platform game, which features a stronger emphasis on exploration compared to previous Sonic titles. Through the course of the game, players gain access to four playable characters—Sonic, Tails, Knuckles, and Sticks—and can instantly switch between them during gameplay. Each character is able to use a homing attack to home in on enemies and an Enerbeam which lets them swing across gaps and remove enemy shields. Each character also has unique skills required to access certain parts of each stage. Sonic is able to perform a mid-air dash which can break blue barriers, Tails can fly up air currents and use various gadgets such as submarines, Knuckles can climb on walls and burrow underground, and Sticks can throw a boomerang that can be controlled mid-flight. Throughout each stage, players can locate crystal shards, required to progress through the game, as well as parts that can be used to buy upgrades.