Developed by SEGA of America, Inc. in 1994, Sonic & Knuckles + Sonic the Hedgehog 3 is a perfect 2D Side-scroller,Action game which ruled the arcade for several years. You can now play it online here.
When you enter the first Special Stage in Mushroom Hill Zone, it will teleport you to Hidden Palace Zone where the Chaos Emeralds are taken from them and transformed into gray Super Emeralds, thus beginning the Super Emerald quest. If you do not have all of the Chaos Emeralds prior to reaching Mushroom Hill Zone, the acquired Chaos Emeralds will become Super Emeralds. You will have the opportunity to acquire the first Super Emerald.
However, you will not be allowed to return to Hidden Palace Zone via Giant Rings until they collect the remaining Chaos Emeralds. If you have not collected a single Chaos Emerald by Mushroom Hill Zone and goes to Hidden Palace Zone via the first Giant Ring, you must exit the area by jumping on the teleporter in the bottom central part of the room.
Want to play Sonic & Knuckles + Sonic the Hedgehog 3 online now, play it on your browser here.
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