Sonic & Knuckles

Sonic & Knuckles[lower-alpha 1] is a 1994 platform game developed and published by Sega. Players control Sonic the Hedgehog and Knuckles the Echidna in their quests to save Angel Island; Sonic tries to stop Doctor Robotnik from re-launching his orbital weapon, the Death Egg, while Knuckles scuffles with Robotnik's minion, EggRobo. Like previous Sonic games, players traverse side-scrolling levels at high speeds while collecting rings and defeating enemies.

Sonic & Knuckles
North American box art
Developer(s)Sega Technical Institute
Publisher(s)Sega
Director(s)Hirokazu Yasuhara[1][2]
Producer(s)Yuji Naka[1][2]
Designer(s)
Programmer(s)
  • Yuji Naka
  • Takahiro Hamano
  • Masanobu Yamamoto[2]
Artist(s)
  • Takashi Yuda
  • Satoshi Yokokawa[2]
Composer(s)
SeriesSonic the Hedgehog
Platform(s)Sega Genesis, Windows
Release
  • Sega Genesis
  • October 18, 1994
  • Windows
    • JP: February 14, 1997
    • WW: 1997
Genre(s)Platform game
Mode(s)Single-player

Sega Technical Institute developed Sonic & Knuckles simultaneously alongside its predecessor, Sonic the Hedgehog 3 (1994); they were planned as a single game until time constraints and cartridge costs forced the developers to split it. The Sonic & Knuckles cartridge features an adapter that allows players to connect the Sonic the Hedgehog 3 cartridge, creating a combined game, Sonic 3 & Knuckles. Sonic the Hedgehog 2 (1992) can also be attached, allowing players to control Knuckles in Sonic 2 stages. Attaching the original Sonic the Hedgehog or any other Genesis game released prior to this will unlock the "Blue Sphere" minigame.

Sonic & Knuckles was released for the Sega Genesis on October 18, 1994. It received positive reviews; critics were impressed with the replay value and lock-on technology, despite its similarity to Sonic 3. The games sold a combined four million copies worldwide, placing them among the best-selling Sega Genesis games. They have since been rereleased in various Sega and Sonic compilations.

Gameplay
See also: Gameplay of Sonic the Hedgehog 3
Knuckles explores Mushroom Hill, the first zone of Sonic & Knuckles.

Since Sonic & Knuckles and Sonic the Hedgehog 3 were initially developed as one game, their gameplay is similar: both are 2D side-scrolling platformers with similar level design, graphics, and game mechanics. However, in Sonic & Knuckles, unlike in Sonic 3, the player chooses either Sonic or Knuckles at the title screen,[3] Miles "Tails" Prower is not available to select, and the player cannot control two characters together. There is also no multiplayer mode or save feature.[4]

The player character moves through six levels, each divided into two acts.[5] The first act of each level ends with a miniboss fight with one of Dr. Robotnik's robots,[6] while the second ends with a regular boss fight with Robotnik (or EggRobo in Knuckles' campaign).[7] Sonic and Knuckles traverse levels differently; Sonic can jump higher and has access to unique shield abilities, whereas Knuckles can glide and climb most walls. The levels also include cutscenes that differ based on the character selected, as Sonic and Knuckles are opponents for most of the game.[3]

The game contains two types of bonus stages accessed by passing a checkpoint with at least 20 rings. The first type has Sonic or Knuckles orbit floating, glowing spheres, jetting off each one when a button is pressed, while a fence of light approaches from the bottom and will remove the player from the stage if touched. Collecting 50 rings in this stage earns the player a continue. The second type involves bouncing around a room with a slot machine in its center with the intention of winning extra lives and power-ups.[8]

Special Stages are entered by finding giant rings hidden in secret passageways: the player is placed in a 3D environment and must turn all of a number of blue spheres red by running through them, but must avoid all red spheres, including formerly blue ones. Yellow spheres bounce the player long distances, and white spheres with red stars on them make the player walk backwards in the opposite direction. Completing a Special Stage earns the player a Chaos Emerald; collecting all seven Emeralds allows the player to turn into Super Sonic or Super Knuckles, more powerful versions of the characters.[8]

Lock-on technology
"Blue Sphere" redirects here. For the video game in the Star Ocean series, see Star Ocean: Blue Sphere.
"Lock-on technology" redirects here. For other uses, see Lock-on.

Sonic & Knuckles features "lock-on technology" that allows players to open the hatch on the cartridge and insert a second cartridge. When Sonic 3 is inserted, the player can play through both games as one, Sonic 3 & Knuckles. This features several changes to the games,[3] such as slightly altered level layouts,[9] the ability to play through Sonic 3 levels as Knuckles[3] or Sonic & Knuckles levels as Tails, and the ability to save progress in Sonic & Knuckles levels.[4] Additionally, combining the cartridges is the only way to collect "Super Emeralds", earned by accessing Special Stages in the Sonic & Knuckles levels after collecting all seven Chaos Emeralds from Sonic 3. When all Super Emeralds have been collected, Sonic, Knuckles, and Tails can transform into Hyper Sonic, Hyper Knuckles, and Super Tails[lower-alpha 2] respectively, each with unique abilities.[10]

Inserting Sonic 2 unlocks Knuckles the Echidna in Sonic the Hedgehog 2, wherein the player can play Sonic 2 using Knuckles' abilities.[3]

If the player attaches any other Genesis game released prior to Sonic & Knuckles, a screen with Sonic, Tails, Knuckles, and Robotnik stating "No Way!" is displayed.[11] From here, the player can also access a minigame based on Sonic 3's and Sonic & Knuckles's Chaos Emerald Special Stages.[12] The attached cartridge determines the Special Stage layout. If the player attaches the original Sonic the Hedgehog,[12] they are able to access all of the possible variations of the special stages, each with a unique level number and corresponding password. This game is named Blue Sphere in Sonic Mega Collection and in Sonic Origins.[10]

Plot

After the events of Sonic 3, Dr. Robotnik's orbital weapon, the Death Egg, crash-lands on Angel Island. Sonic travels to Angel Island to retrieve the Chaos Emeralds to defeat Robotnik, and once again comes into conflict with Knuckles, who believes Sonic is trying to steal the Emeralds for himself. In Hidden Palace Zone, Sonic fights and defeats Knuckles, only to discover Robotnik stealing the Master Emerald, the secret to the island's levitation powers. Knuckles attacks Robotnik, but Robotnik shocks him with electricity. Knuckles shows Sonic a portal that leads them to Sky Sanctuary, where the Death Egg is relaunching. Sonic infiltrates the Death Egg and defeats Robotnik as Super Sonic, retrieving the Master Emerald and returning it to Angel Island as it rises back into the sky.

In Knuckles' story, taking place after Sonic's, Knuckles is attacked by EggRobo, one of Robotnik's robots. He chases him to the damaged remains of Sky Sanctuary, where Mecha Sonic attacks Knuckles, but accidentally destroys EggRobo instead. Mecha Sonic uses the power of the Master Emerald to achieve a Super form similar to Sonic's and fights Knuckles until the latter eventually defeats the mecha. Sonic flies in piloting the biplane Tornado, and takes Knuckles and the Master Emerald back to Angel Island. If all the Chaos Emeralds are collected, Angel Island rises upwards, into the sky. However, if the player has not collected all the Chaos Emeralds, Angel Island plummets into the ocean.

Development
See also: Sonic the Hedgehog 3 § Development
The Sonic & Knuckles cartridge features a "lock-on" adapter that allows it to be physically attached to other Genesis cartridges.

Sonic & Knuckles was developed in California by the Japanese members of Sega Technical Institute (STI).[13][14][15] Sonic 3 and Sonic & Knuckles were originally planned as a single game;[16] according to designer Takashi Iizuka, the team "really wanted to hit a home run", with larger stages that took longer to develop.[17] As ROM cartridges were too small to contain the game and Sega wanted it released in time for a promotional deal with McDonald's in the US,[18][19] Sonic 3 was split in two,[17] with Sonic & Knuckles as the second part.[20]

Despite the split, the developers wanted the games to feel like a single experience.[17] According to Roger Hector, vice president and general manager of STI, the lock-on technology was conceived between the releases of Sonic the Hedgehog (1991) and Sonic the Hedgehog 2 (1992).[21] The team explained their situation to Sega's hardware division, which gave them the lock-on adapter. The team knew that players would likely use the adapter to insert games beside Sonic 3, so they implemented the Blue Sphere minigame for most games. They made Knuckles playable in Sonic 2 if that game was inserted because the team found his play style suited its levels. They considered including the same functionality for the original Sonic the Hedgehog, but the developers felt Knuckles' abilities did not work with its level design.[17]

Release

Sonic & Knuckles was released on October 18, 1994.[22] It was released around the same time as Nintendo's Donkey Kong Country for the Genesis's competitor, the Super Nintendo Entertainment System. Industry figures called the coinciding releases a "battle" as both advertised "revolutionary" technological advances: lock-on technology for Sonic & Knuckles and 3D-rendered graphics for Donkey Kong.[23]

Sonic & Knuckles was backed by a $45 million marketing campaign; at the time, video games typically had a marketing budget of $5 million.[23] Blockbuster Video and MTV co-sponsored a tournament in which children were allowed to play Sonic & Knuckles. The final tournament was held at Alcatraz Island in San Francisco, California, with a prize of $25,000 and the title "The World's Most Hardcore Gamer". Two finalists were also awarded a copy of every Sega product released for the next year.[24] MTV broadcast the tournament finale along with footage of the game as "MTV's Rock the Rock".[24]

Rereleases
See also: List of Sonic the Hedgehog compilations

Sonic & Knuckles has been released as part of numerous compilations of Sega games including Sonic Jam (1997) for the Sega Saturn;[25] Sonic & Knuckles Collection (1997) and Sonic & Garfield Pack (1999) for the PC,[26] Sonic Mega Collection (2002) for the GameCube;[27] Sonic Mega Collection Plus (2004) for the PlayStation 2, Xbox, and PC;[28] Sonic's Ultimate Genesis Collection (2009) for the Xbox 360 and PlayStation 3;[29] and Sonic Classic Collection (2010) for the Nintendo DS.[30]

Sonic Jam, in addition to featuring the original release, included some new "remix" options to modify the game:[31] "Normal" mode alters the layout of rings and hazards and "Easy" mode removes certain acts entirely from the game. The version in Sonic's Ultimate Genesis Collection does not retain the lock-on feature included in other versions of the game, because of "tight development times".[32][33]

The game has been re-released through the Wii's Virtual Console and Xbox 360's Xbox Live Arcade.[34][35] Both releases are programmed such that, if any of the "Lock-on" games are also downloaded on the same account, the "connected" versions of the game are also available. For example, if one downloads Sonic & Knuckles and Sonic 2, they have the option to play the corresponding Knuckles in Sonic 2 game.[34] When the PC version was released via the Steam software, the games were released together as Sonic 3 & Knuckles as originally intended, with the player (even if playing as Tails) simply continuing at the beginning of Sonic & Knuckles after finishing Sonic 3.[36]

Sonic & Knuckles is included in the retro console Sega Genesis Flashback released in 2017 by AtGames, a compilation of 45 Genesis games that does not have Sonic 3.[37]

Sonic 3 & Knuckles was re-released for the first time since 2011 as part of the Sonic Origins compilation in 2022. All versions of the games included in Origins are remasters running on the Retro Engine, with Sonic 1, 2 and CD being new ports of existing remasters. This version of the title was developed by Simon Thomley of Headcannon, who previously worked on both Sonic Mania and the other titles included.[38] The Origins version features the original "Blue Sphere" minigame as a bonus mode, as well as new iteration of the mode called "New Blue Spheres" which includes the additional sphere colors introduced in Sonic Mania.

Reception

The Genesis version sold at least 1.24 million copies in the United States.[48] Sonic 3 and Sonic & Knuckles sold a combined 4 million cartridges worldwide.[49][50]

Critics praised Sonic & Knuckles, despite its similarity to its predecessor. The four reviewers of Electronic Gaming Monthly named it their "Game of the Month". They lauded the lock-on technology and remarked that despite that being "more of the same, it still is an exceptional game".[40] GamePro commented that the ability to play as Knuckles makes it essentially two games on a single cartridge, the game is more challenging than Sonic 3, and the ability to hook the cartridge up to Sonic 2 and 3 makes those games "worth playing again". They gave it a perfect 5.0 out of 5 in all four categories (graphics, sound, control, and funfactor).[51] Next Generation remarked, "Basically, this is the same Sonic game that Sega has sold for the last three years, just wrapped up better and with a prettier ribbon."[43]

Critics praised the lock-on technology the game offered. Lucas Thomas of IGN said it was "a great game on its own", but the lock-on feature completely revamped the overall experience.[3] Dan Whitehead of Eurogamer preferred Sonic & Knuckles to Sonic 3,[52] stating that he could not fully appreciate its predecessor without its "companion piece".[53] Sega Power's review praised the game's harder difficulty in comparison to its predecessor and the new expansion of levels, admitting that the expansion would not have been possible had Sonic 3 been a single game.[46] Sega Magazine's review similarly praised the lock-on technology and the new innovation the unique cartridge offered, adding that Sonic & Knuckles' hidden stages and bosses would strongly add to the replay value of the combined game.[45]

Reviewing the Virtual Console release, Nintendo Life writer James Newton praised its support for the old lock-on feature of the original release, claiming that the game does not truly shine without having purchased Sonic the Hedgehog 2 and 3 to activate this feature.[44] Thomas praised the game for "impressive visuals that pushed the Genesis to its limits" and for the value added in the content unlocked with the lock-on technology.[3]

Legacy

For the series' twentieth anniversary in 2011, Sega released Sonic Generations, a game that remade aspects of various past games from the franchise.[54] A remake of the Sky Sanctuary stage was made for the Xbox 360, PlayStation 3, and PC versions of the game,[55] while the Mushroom Hill level was remade for the Nintendo 3DS version of the game.[56] Sonic & Sega All-Stars Racing features a track inspired by the Death Egg as downloadable content along with the Metal Sonic character.[54] The sequel, Sonic & All-Stars Racing Transformed, featured the same race course, and an additional new one inspired by the Sky Sanctuary stage.[57] Re-imagined versions of the Flying Battery and Lava Reef stages, along with the Blue Sphere bonus game, appear in the 2017 game Sonic Mania.[58]

Notes
  1. Japanese: ソニック&(アンド)ナックルズ, Hepburn: Sonikku ando Nakkuruzu
  2. Several years later, with the re-release of Sonic 3 & Knuckles in Sonic Origins, this transformation would be referred to as Hyper Tails, now having another version of Super Tails that is unlocked by collecting all seven Chaos Emeralds.

References
  1. Sonic & Knuckles US manual. p. 28. Archived from the original on 6 February 2015. Retrieved 6 February 2015.
  2. Sonic & Knuckles JP manual. Sega. 1994. Archived from the original on 2015-02-06.
  3. Thomas, Lucas M. (February 22, 2010). "Sonic & Knuckles Review". IGN. Archived from the original on February 26, 2010. Retrieved November 17, 2014.
  4. Sonic & Knuckles (Genesis) instruction manual, pp. 22–24.
  5. Sonic & Knuckles (Genesis) instruction manual, pp. 12–15.
  6. Sonic & Knuckles (Genesis) instruction manual, p. 9.
  7. Sonic & Knuckles (Genesis) instruction manual, p. 15.
  8. Sonic & Knuckles (Genesis) instruction manual, pp. 16–18.
  9. Sonic & Knuckles (Genesis) instruction manual, p. 22.
  10. "Sonic And Knuckles Collection Cheats". Game Revolution. Retrieved January 26, 2015.
  11. "Sonic & Knuckles Cheats and Overview". Game Revolution. Retrieved January 27, 2015.
  12. Thompson, Jon. "Sonic & Knuckles – Review". Allgame. Archived from the original on November 14, 2014. Retrieved June 5, 2013.
  13. Horowitz, Ken (June 11, 2007). "Developer's Den: Sega Technical Institute". Sega-16. Retrieved 15 March 2018.
  14. "Sonic 3 & Knuckles - Behind the Scenes". GamesTM (60): 140–144.
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  21. "When Knuckles Met Sonic". GamePro. No. 66. IDG. January 1995. p. 20.
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  37. Stein, Scott. "Sega's HD answer to the SNES Classic made my inner Sega kid cry". CNET.
  38. Thomley, Simon [@HCStealth] (April 20, 2022). "Though Sega is creating Sonic Origins internally, I'm grateful that they chose us to build the S3&K that they're integrating into the collection. We worked extremely hard in that time and are very proud of what were able to deliver to Sega. We hope you'll enjoy the final product!" (Tweet). Retrieved April 20, 2022 – via Twitter.
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  43. "Finals". Next Generation. No. 1. Imagine Media. January 1995. p. 101.
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  49. Sonic the Hedgehog GameTap Retrospective (Alternative Compilation Upload) (YouTube). GameTap. 2009. Event occurs at 12:40 (Sonic 1), 14:39 (Sonic 2), 18:40 (Sonic 3/Sonic & Knuckles). Archived from the original on 2021-12-12.
  50. Sonic the Hedgehog GameTap Retrospective Pt. 4/4 (YouTube). GameTap. Event occurs at 1:39. Archived from the original on July 25, 2015.
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  53. Whitehead, Dan (7 September 2007). "Virtual Console roundup". Eurogamer. Retrieved February 5, 2015.
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  58. Good, Owen (14 May 2017). "Sonic Mania's latest trailer puts Knuckles back in Flying Battery Zone". Polygon. Retrieved 30 May 2017.

Works cited

  • Pinney, Joe (1994). Sonic & Knuckles: Official Game Book. Indianapolis, IN: Brady Pub. ISBN 978-1-5668-6218-9.

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