Sonic the Hedgehog has been that the variant gameplay styles found in recent 3D games have strayed from the formula of the original series. Specifically, the series' jump to 3D has been noted as a declining point. In late 2010, Sega delisted several below-average "Sonic" games, such as the notoriously disliked 2006 game "Sonic the Hedgehog", to increase the value of the "Sonic" brand after positive reviews for the games "" and "Sonic Colors". Sonic the Hedgehog Sonic the Hedgehog is a video game franchise produced by Sega centering on a series of high-speed platform games. Sonic, the protagonist, is an anthropomorphic blue
Sonic the Hedgehog completely playable under a second player's control, as well as adding the option for players to utilize Tails' flying ability in levels. It also introduced the character, Knuckles the Echidna, who served as an additional antagonist with Doctor Robotnik for the game. "Sonic & Knuckles", another platform game in the "Sonic series", was released later in 1994. The game featured Knuckles as a playable character with gliding and wall climbing abilities and allowed gamers to plug in "Sonic the Hedgehog 3" to the top of the "Sonic and Knuckles" cartridge as part of the game's "lock on" functionality. This allowed