#24: Sonic Blast
Not to be confused with Sonic 3D Blast, Sonic Blast has no story but follows Sonic or Knuckles through 5 zones where you have to collect 5 chaos emeralds. The end.
#25: Sonic's Schoolhouse
MATH!!
SPELLING!!!!!!!
LEARNING ABOUT ANIMALS!!!!!!
#26: Sonic 3D Blast
Story:
"Dr. Robotnik discovers that some strange birds, called Flickies, reside on a secluded island in the ocean. He learns that they are native to a different dimension, and can travel between worlds using large rings. Consequently, the Doctor resolves to turn them all into robots, to help him search for the Chaos Emeralds. One day, Sonic visits Flickies' Island and sees what Robotnik has done to the birds. Naturally, he decides to free the Flickies and stop Robotnik from finding the Emeralds."
This is Sonic's first 3D game, not counting the Sonic Drifts! Basically you run around grabbing rings, teleporting to different areas of the stage after grabbing a certain number of Flicky birds who make you a giant teleporting ring. At the end of each level, you battle Robotnik.
#27: Sonic The Fighters
Story:
"Doctor Robotnik has released the Death Egg II, and now Sonic and Tails must stop him. However, their new airship only supports 1 passenger, and to defeat Eggman they need the 8 Chaos Emeralds (7 in the majority of Sonic continuities). The eight wielders of the Chaos Emeralds, including Sonic and Tails themselves, take part in a battle tournament, with the winner taking all the Chaos Emeralds. The participants, in order of combat, are:
■Amy Rose
■Bark the Polarbear
■Espio the Chameleon
■Miles "Tails" Prower
■Fang the Sniper
■Bean the Dynamite
■Sonic the Hedgehog
After arriving at the Death Egg II, the heroes get a surprise visit from Metal Sonic. After defeating him, the Death Egg II begins to fall apart as Doctor Robotnik in his mech suit challenges the victor (you must finish this round to complete the story). Unlike other battles in the game, you only get one shot to take down Eggman.
Sonic can also become Super Sonic in story mode. Without losing a life since the 1st fight, the player enters Hyper Mode in the 2nd Round against Metal Sonic."
This game is basically your average fighting game but with Sonic characters. Punch, kick, spin dash!!
Amy
Bark
Bean
Eggman
Espio
Nack
Knuckles
Metal Sonic
Sonic
Super Sonic
Tails