Sonic Forces is an action-adventure platform game similar in gameplay and style to prior Sonic the Hedgehog games. The player's goal is to liberate the world from the newly established reign of Doctor Eggman. The game features three playable characters: two variants of Sonic the Hedgehog ("Classic" and "Modern") and the "Avatar" (the player's custom character).[1] Each has unique abilities and attributes: Classic Sonic is restricted to side-scrolling gameplay reminiscent of the Sega Genesis Sonic games and can perform a spin dash on the ground and a drop dash in mid-air to gain speed.[2] Modern Sonic's gameplay follows a similar style to Sonic Unleashed and Sonic Colors: he can double jump, perform a homing attack on enemies, springs, and grappling hooks, and a speed boost by collecting White Wisps.[3] The Avatar is created from a base of seven animal types, which each possess a unique ability; they also wield a grappling hook and can equip weapons known as Wispons, including flamethrowers, whips, and hammers. Depending on the Wispon, Avatars can use temporary abilities by collecting a corresponding Wisp type.[4][5] Certain parts see players controlling both Modern Sonic and the Avatar, switching between them as necessary, similar to Sonic Heroes.[6]