Sonic 2 follows on from the huge success of Sonic 1, but this game is bigger and better. Sonic is not alone this time, as he now has a new friend accompanying him, Miles Prower the two-tailed fox, better known as Tails, so Sonic's journey won't be as lonely-felt as in Sonic 1. Tails will pitch in and help defeat the robot animals transformed by Dr. Eggman, who again is after the Chaos Emeralds to power his Death Egg, leading to his ever-familiar plan for World Domination. Clearly, the mad scientist hasn't learned from his failures from Sonic 1, but will go to incredible lengths to try and get his wish, so its up to Sonic and Tails to try and defeat him once again. Zones, of which there are now more, will have two levels instead of three, with the exception of one zone where there is three, and more tougher robot enemies will guard the zones trying to get in the way of Sonic and Tails. Rings are collected like before, with Sonic losing all rings when damage is taken, and a life if damage is taken with no rings. A life is given for every 100 rings collected. Television boxes will give him special items or powers, even if some are only for a short time. Star posts during a level mean checkpoints, but go through one with 50 rings and a star wave circles above it. Go through it to access a special stage. Winning a special stage by meeting ring requirements in phases will lead to Chaos Emeralds, and there are now 7 to collect instead of the six in Sonic 1. Also, Super Transformation has now been introduced, meaning all Chaos Emeralds and 50 rings collected will activate Sonic in his Super form, should the player wish, making him more powerful and invincible until he runs out of rings. That can be very useful for the boss battles with Eggman at the end of every zone, with battles now more difficult. Overall, this game is considered to be a significant upgrade in terms of content, features, sound and depth in comparison to Sonic 1, and Tails will go on to become an even more prominent figure in the Sonic the Hedgehog series, acting as Sonic's sidekick.
Sonic 2 follows on from the huge success of Sonic 1, but this game is bigger and better. Sonic is not alone this time, as he now has a new friend accompanying him, Miles Prower the two-tailed fox, better known as Tails, so Sonic's journey won't be as lonely-felt as in Sonic 1. Tails will pitch in and help defeat the robot animals transformed by Dr. Eggman, who again is after the Chaos Emeralds to power his Death Egg, leading to his ever-familiar plan for World Domination. Clearly, the mad scientist hasn't learned from his failures from Sonic 1, but will go to incredible lengths to try and get his wish, so its up to Sonic and Tails to try and defeat him once again. Zones, of which there are now more, will have two levels instead of three, with the exception of one zone where there is three, and more tougher robot enemies will guard the zones trying to get in the way of Sonic and Tails. Rings are collected like before, with Sonic losing all rings when damage is taken, and a life if damage is taken with no rings. A life is given for every 100 rings collected. Television boxes will give him special items or powers, even if some are only for a short time. Star posts during a level mean checkpoints, but go through one with 50 rings and a star wave circles above it. Go through it to access a special stage. Winning a special stage by meeting ring requirements in phases will lead to Chaos Emeralds, and there are now 7 to collect instead of the six in Sonic 1. Also, Super Transformation has now been introduced, meaning all Chaos Emeralds and 50 rings collected will activate Sonic in his Super form, should the player wish, making him more powerful and invincible until he runs out of rings. That can be very useful for the boss battles with Eggman at the end of every zone, with battles now more difficult. Overall, this game is considered to be a significant upgrade in terms of content, features, sound and depth in comparison to Sonic 1, and Tails will go on to become an even more prominent figure in the Sonic the Hedgehog series, acting as Sonic's sidekick. 
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