Sonic & Sally 2 is a reboot of Sonic the Hedgehog 2.
Plot
A few months after the first game, Sonic and Sally are travelling, they find a ransacked hut, and inside, a crying two tailed fox named Miles Prower. He explains a strange man riding a egg shaped hover pod kidnapped his parents to build something. Unable to stand for this. The Blue Blur and Acorn Princess run off to save the Prower's, with the newly nicknamed Tails following them.
After Metropolis Zone, a Cutscene plays shows Tails' parents are now robotisized, but Sally uses NICOLE to restore their free will. They show plans for Robotnik's new weapon he forced them to help build. The Death Egg. The three then run off to stop the mad man.
There are two endings in the game.
Bad Ending (FAiling to Collect all Emeralds): After defeating the Death Egg Robot, the playable character escapes the exploding Death Egg using the Tornado. Tails reunites with his parents, though they are still Robotisized. After the credits, Dr. Robotnik is shown laughing while holding the Chaos Emeralds the player did not collect in his hands.
Good Ending (Collected all Emeralds): After defeating the Death Egg Robot, the playable character escapes the exploding Death Egg using the Tornado. Tails reunites with his parents, though they are still Robotisized. However, the Chaos Emeralds glow and return Amadeus and Rosemary to flesh and blood. After the credits, an infuriated Robotnik is shown jumping on top of an "END" text in frustration.
Gameplay
is a side-scroller 2D platformer video game, which plays identical as the first Sonic the Hedgehog game. The player can play as either Sonic, Sally or Tails. Each character has unique playstyles. Sonic and Sally play the same as they did in the previous game, But Tails can fly for a few seconds by pressing the jump button again (Swim when underwater).
The main objective of Sonic the Hedgehog 2 is to finish its Acts in less than ten minutes. In these Acts, the player can find many Rings, which serve as their playable character's main method of protection. If a character is hit while having at least one Ring, they will survive with the cost of losing all their Rings. However, if the playable character is hit without having Rings, they will lose a life, or get a Game Over if they do not have any lives left.
Obtaining all seven Chaos Emeralds by clearing all of the Special Stages will unlock a new feature for the playable characters: Super Forms. When Sonic, Sally, or Tails have all seven emeralds and 50 rings, they can jump into the air and turn into there super forms. Every one of their abilities are increased and are invincible, although they can still die by drowning, getting crushed, falling into a bottomless pits, or running out of time.