Sonic the Hedgehog
Due to the success of "Sonic" games on the Sega Genesis, the series was introduced to the Master System and the Game Gear. Sega began by releasing "Sonic the Hedgehog", a 2D platform game, in 1991. The game featured Sonic's ability to run and to jump at high speeds like its Mega Drive/Genesis counterpart but with notably different level design and music. Sega later released "Sonic the Hedgehog 2" another 2D platform game, in 1992. The game differed from its Genesis counterpart with different levels and music and by not including a "spin dash" maneuver. It also featured a different storyline in which Doctor Robotnik kidnaps Tails, who is non-playable in the Master System/Game Gear version. "Sonic Chaos"/"Sonic and Tails" (Japan), released in 1993, was similar to the earlier two Sega Master System/Game Gear "Sonic" games, but featured Tails as a playable character. A sequel, "Sonic Triple Trouble"/"Sonic and Tails 2" (Japan), a 2D platform game, was released in 1994 for the Game Gear and introduced a new character, Nack the Weasel, who, along with Knuckles and Doctor Robotnik, raced to collect the Chaos Emeralds. One of the last games for the Sega Game Gear, "Sonic Blast", was released in 1996 and featured prerendered sprites.
Sonic: After the Sequel
"After the Sequel" is a 2D platformer in the style of the "Sonic" games for the Sega Genesis. As such, it lets the player control either the blue hedgehog Sonic or his orange fox friend Tails. Both characters can move left and right with the arrow keys and jump with the "Z" key; Tails can also fly to reach areas Sonic cannot. The game takes place in seven levels, known as zones, each divided into three acts followed by a boss fight with Doctor Eggman. These zones are designed for fast-paced gameplay, featuring typical "Sonic" obstacles such as bottomless pits and vertical loops. The zones are based on various themes, including haunted houses, cities, magma caverns, winter theme parks, and sugar processing plants.