From Sonic Retro
|Extra level, Sonic Forces|
|Number of Acts: 7|
EX Stages are seven optional stages in Sonic Forces that can be unlocked by collecting Red Star Rings throughout the game. Completing these stages will unlock extra Avatar items and offer bonus experience for the Avatar.
These levels have the same gameplay mechanics as the regular levels in Sonic Forces, but are much shorter. They are always played from a 2.5D perspective and put special emphasis on a particular gimmick or obstacle, such as flamethrowers and exploding blocks. The routes the player travels along in a secret stage are likewise different from those in regular stages, having been constructed from the ground up with additional plaforms and basic building blocks, such as unbreakable Containers.
Unlike Secret Stages, EX Stages are much tougher to complete, and by completing all of them will make Team Sonic's occupied territory increase beyond 99.9% and all the way up to 119.9%, though this does not erase the Eggman Empire's remaining 0.1%. Only Modern Sonic and the Avatar are playable in these stages, with Shadow the Hedgehog being playable in Sonic's stages if Episode Shadow has been downloaded.
List of EX Stages
|1||Flying Pod||Green Hill||Sonic/Shadow||Collect 25 Red Star Rings.|
|2||Bomb Block 2||Chemical Plant||Avatar||Collect 40 Red Star Rings.|
|3||Laser Cannon 2||Metropolis||Avatar||Collect 55 Red Star Rings.|
|4||Reverse Block 2||Green Hill||Sonic/Shadow||Collect 70 Red Star Rings.|
|5||Vanish Panel 2||Mystic Jungle||Avatar||Collect 85 Red Star Rings.|
|6||Fire Cannon 2||City||Sonic/Shadow||Collect 100 Red Star Rings.|
|7||Plasma Cannon 2||Death Egg||Sonic/Shadow||Collect 120 Red Star Rings.|