is a 1991 side-scrolling

platform game A platform game (often simplified as platformer and sometimes called a jump 'n' run game) is a sub-genre of action game, action video games in which the core objective is to move the player character between points in an environment. Platform game ...

. It is a companion to the

16-bit 16-bit microcomputers are microcomputers that use 16-bit microprocessors. A 16-bit register can store 216 different values. The range of integer values that can be stored in 16 bits depends on the integer representation used. With the two mos ...

Sega Genesis The Sega Genesis, known as the outside North America, is a 16-bit Fourth generation of video game consoles, fourth generation home video game console developed and sold by Sega. It was Sega's third console and the successor to the Master Syst ...

game ''

Sonic the Hedgehog is a Japanese video game series and media franchise created by Sega. The franchise follows Sonic, an anthropomorphic blue hedgehog who battles the evil Doctor Eggman, a mad scientist. The main ''Sonic the Hedgehog'' games are platformer ...

'' for the

8-bit In computer architecture, 8-bit integers or other data units are those that are 8 bits wide (1 octet). Also, 8-bit central processing unit (CPU) and arithmetic logic unit (ALU) architectures are those that are based on registers or data buses of ...

Game Gear The is an 8-bit Fourth generation of video game consoles, fourth generation handheld game console released by Sega on October 6, 1990, in Japan, in April 1991 throughout North America and Europe, and during 1992 in Australia. The Game Gear pri ...

and

Master System The is an 8-bit History of video game consoles (third generation), third-generation home video game console manufactured by Sega. It was originally a remodeled export version of the Sega Mark III, the third iteration of the SG-1000 series of ...

consoles.

Ancient Ancient history is a time period from the beginning of writing and recorded human history to as far as late antiquity. The span of recorded history is roughly 5,000 years, beginning with the Sumerian cuneiform script. Ancient history cove ...

—a studio founded by composer

Yuzo Koshiro is a Japanese composer and sound programmer. He is often regarded as one of the most influential innovators in chiptune and video game music, producing music in a number of genres including rock, jazz, symphonic, and various electronic genr ...

for the project—developed the game and Sega published it to promote the

handheld A mobile device (or handheld computer) is a computer small enough to hold and operate in the hand. Mobile devices typically have a flat LCD or OLED screen, a touchscreen interface, and digital or physical buttons. They may also have a physical ...

Game Gear. The 8-bit ''Sonic'' is a

side-scrolling video game '' A side-scrolling video game (alternatively side-scroller), is a game viewed from a side-view camera angle where the screen follows the player as they move left or right. The jump from single-screen or flip-screen graphics to scrolling graphi ...

similar in style to the 16-bit game, but reduced in complexity to fit the 8-bit systems. The premise and story of the 8-bit ''Sonic'' are identical to that of the 16-bit game: as the

anthropomorphic Anthropomorphism is the attribution of human traits, emotions, or intentions to non-human entities. It is considered to be an innate tendency of human psychology. Personification is the related attribution of human form and characteristics t ...

hedgehog

Sonic Sonic or Sonics may refer to: Companies *Sonic Drive-In, an American drive-in fast-food restaurant chain * Sonic (ISP), an Internet provider and CLEC, serving more than 100 California communities * Sonic Foundry, a computer software company wh ...

, the player races through

levels Level or levels may refer to: Engineering *Level (instrument), a device used to measure true horizontal or relative heights *Spirit level, an instrument designed to indicate whether a surface is horizontal or vertical *Canal pound or level *Regr ...

to rescue the imprisoned animals

Doctor Robotnik Doctor Ivo "Eggman" Robotnik is the main antagonist of Sega's ''Sonic the Hedgehog'' franchise. Eggman was created and designed by Naoto Ohshima as part of many design choices for Sega's new mascot. After the creation of Sonic the Hedgehog, Ohsh ...

plots to turn into robots. Gameplay is similar; Sonic collects

rings Ring may refer to: * Ring (jewellery), a round band, usually made of metal, worn as ornamental jewelry * To make a sound with a bell, and the sound made by a bell :(hence) to initiate a telephone connection Arts, entertainment and media Film and ...

while avoiding obstacles, but is paced slightly slower as the 8-bit version focuses more on

exploration Exploration refers to the historical practice of discovering remote lands. It is studied by geographers and historians. Two major eras of exploration occurred in human history: one of convergence, and one of divergence. The first, covering most ...

. While some level themes, such as Green Hill Zone, are borrowed from the 16-bit game, others are original. It also features a different soundtrack from Koshiro, which comprises new material alongside some rearrangements of

Masato Nakamura is a Japanese musician, bass guitarist, and record producer. He is a member of the J-pop band Dreams Come True, which was formed in 1988 and went on to sell over 50million CDs. He also composed the soundtracks for the video games ''Sonic the He ...

's tracks for the 16-bit game. Reviewers acclaimed the 8-bit ''Sonic'' for its level variety, visuals, gameplay, and audio. Many believed that it compared favorably to its 16-bit counterpart, although some criticism was directed at its low difficulty and short length. Game journalists retrospectively considered it one of the best Game Gear and Master System games. The 8-bit ''Sonic'' has been rereleased through ''

'' game compilations and Nintendo's

Virtual Console A virtual console (VC) – also known as a virtual terminal (VT) – is a conceptual combination of the keyboard and display for a computer user interface. It is a feature of some Unix-like operating systems such as Linux, BSD, illumos, Un ...

. It received several sequels, beginning with ''

Sonic the Hedgehog 2 is a 1992 platform game developed by Sega Technical Institute (STI) for the Sega Genesis. It follows Sonic as he attempts to stop Doctor Eggman from stealing the Chaos Emeralds to power his space stationnamed The Death Egg. Like the first ...

'' in 1992. It was also Ancient's first game and the only ''Sonic'' game they developed.

Gameplay

The

''Sonic the Hedgehog'' is a side-scrolling

similar in gameplay and style to the original

game of the same name, save for several new and altered

game mechanics In tabletop games and video games, game mechanics are the rules or ludemes that govern and guide the player's actions, as well as the game's response to them. A rule is an instruction on how to play, a ludeme is an element of play like the L-sha ...

. As in the original, the

hedgehog

ventures to rescue the animal population of South Island from the diabolical

, who plots to turn them into robots. The player jumps between platforms, avoids enemy and inanimate obstacles, and breaks

television Television, sometimes shortened to TV, is a telecommunication Media (communication), medium for transmitting moving images and sound. The term can refer to a television set, or the medium of Transmission (telecommunications), television tra ...

s to collect shields, speed shoes, and

invincibility {{Short pages monitor