Sonic 3 & Knuckles is a game that combines two versions Sonic & Knuckles and Sonic the Hedgehog 3. Sonic and his friends are back with an extremely interesting new character called Knuckles. The story takes place after the events of the previous section, at this time the Dr. Death weapon Robotnik’s was broken after fighting Sonic. In the search for Chaos Emeralds to defeat Robotnik, Sonic meets Knuckles, the guardian of the jewels. Doubting Sonic wants to win his own Chaos Emeralds, so there’s a fight between them, while they are fighting, the doctor steals the Emerald Master and escapes. Sonic and Knuckles now have to stop Robotnik’s crazy plan. Remaining familiar gameplay, when starting the game, you can choose your favorite character then join the difficult game screen. During the game, you also have to try to avoid the pitfalls and have to fight the robots of Robotnik. In addition, there are special 3D screens here where you will have to find the rings hidden behind secret paths, your task is to turn all the blue orbs into the red by passing through them upon completion, you will find an Emerald Chaos. When you collect all seven Chaos Emeralds, you will gain an extremely powerful state.