Fan games The following are all original games based on the
Sonic series: •
Green Hill Paradise Act 2 is a 3D
Sonic game built by Daniel "SuperSonic68" Coyle and other collaborators with the 3D Sonic Games Development Kit. This game gained notability for receiving a positive response from Sega. •
Sonic Utopia is 3D
Sonic game demo, which demonstrates 3D
Sonic gameplay in a large open world. •
Sonic Before the Sequel is a 2D
Sonic game created by Felipe "LakeFeperd" Daneluz, set in between the events of
Sonic the Hedgehog and
Sonic the Hedgehog 2. The game's original release in 2011 had a soundtrack with reused music coming from different video game franchises like
Kirby, but a second release in 2013 came with original music specifically for the game. The game received wide critical praise for its faithfulness to earlier titles. Two sequels,
Sonic After the Sequel and
Sonic Chrono Adventure, were later developed and released in 2013, the latter incorporating
Metroidvania and
time travel elements. •
Sonic Fan Remix is a 2.5D
Sonic game created in
Unity that features reimagined levels from past
Sonic games. •
Retro Sonic is a 2D
Sonic game created by
Christian Whitehead. It is the first game to use the
Retro Engine (the engine used for the 2011 remaster of
Sonic CD), and later merged with two other
Sonic fangames,
Sonic Nexus and
Sonic XG, to form
Retro Sonic Nexus, a collaboration project led by Whitehead.
Retro Sonic Nexus was ultimately cancelled in 2011, splitting up the three projects, while Whitehead went on to work with
Sega to develop remasters of early
Sonic titles, later directing
Sonic Mania. •
Sonic Robo Blast 2 is a 3D
Sonic game that uses a modified version of the
Doom Legacy engine and has been in development since 1998. The game gained notability for being the first 3D
Sonic fangame, and it continues to be updated by its developers and supported by its community to the present day. A
kart racing variant,
Sonic Robo Blast 2 Kart, was released in November 2018 using the same engine; a sequel, '''''Dr. Robotnik's Ring Racers''''', was released in 2024. •
Chao Resort Island is a fangame for
Microsoft Windows and
macOS, based upon the
Chao-raising minigames in
Sonic Adventure. •
Sonic World is a game heavily based upon the
Sonic Adventure titles and
Sonic Heroes. It features over 30 playable characters and the ability to make
Heroes-style teams, as well as remastered levels from various
Sonic games. An upgraded version called
Sonic World DX received its first demo release in 2020, and remains in active development. •
Sonic Z-treme is a
homebrew Sega Saturn game that aims to recreate concepts from the canceled game
Sonic X-treme using original code. It can be made to run on real Saturn hardware if it is
burned to a disc. Some previous members of the development team would go on to work on
Sonic Mania. •
Sega Master System Brawl is a homebrew fighting game designed for
Sega Genesis hardware. It is a
platform fighter that features characters and arenas from several different
Master System games, such as
Sonic the Hedgehog,
Alex Kidd in Miracle World,
Kung Fu Kid,
Dynamite Dux, and
Vampire: Master of Darkness. •
Sonic Eclipse Online was a popular 3D
Sonic game on the game creation platform
Roblox. After the developer Arnold "DoctorRofatnik" Castillo had his account banned for accusations of
sexually preying on a child, which were propagated by YouTuber
Ruben Sim, Castillo transferred the game to a friend's account and continued profiting from it. Roblox refused to take the game down as they did not view it as a safety concern. Later, after being notified, Sega had the game taken down via a copyright infringement notice. (Castillo was later sentenced to 15 years in prison for transporting another child across interstate lines for sex.) The case was used by
People Make Games and
Bloomberg Businessweek to accuse Roblox of
practices compromising child safety. •
Sonic Smackdown is a 2D
Sonic fighting game developed by ArcForged. The game features 17 playable characters and 1-on-1 battles with similar mechanics to games like
Marvel vs. Capcom. The game has seen play in several
fighting game community tournaments. An updated version,
Ultimate Sonic Smackdown, is currently in development and adds tag team mechanics with support for teams of up to 3 characters. •
Sonic Omens is an
episodic 3D
Sonic game that garnered controversy regarding its funding through
Patreon. Discourse surrounding the project led
Sonic social media manager Katie Chrzanowski to clarify via Twitter that "So long as no profit is involved, there is usually no issue with y'all using our blue boy to hone your art and dev skills – but, for legal reasons, I can't promise all content is OK". •
Sonic GT is a finished 3D
Sonic game built on the fan-made Bumper Engine. It iterates on gameplay elements from the series' official 3D entries. The creator would later refine many of the game's mechanics for an original project, ''
Rollin' Rascal'', which was crowdfunded via
Kickstarter in 2024. •
Sonic 3D in 2D is a reimagining of
Sonic 3D Blast as a classic-style 2D
Sonic game. Unlike the original, Tails and Knuckles are included as playable characters and retain their abilities from the classic titles. •
Virtua Sonic is a 3D
Sonic virtual reality game built on the base of
Sonic GT. The player takes control of Sonic from a
first-person perspective and must pump their arms in the air to accelerate forward. Additional speed can be acquired by taking advantage of the game's level terrain. It debuted at the 2020
Sonic Amateur Games Expo and supports
SteamVR-compatible
headsets. •
Sonic and the Fallen Star is a 2D
Sonic game featuring original levels and music. It is inspired by multiple 2D
Sonic titles,
Sonic Heroes, and the
Before the Sequel and
After the Sequel fangames. A sequel,
Sonic and the Moon Facility, was announced in 2023, but later cancelled in February 2024, with an unfinished demo published online in February 2025. •
Sonic Time Twisted is a 2D
Sonic game in the style of the 16-bit titles, mostly following that of
Sonic the Hedgehog 3 and
Sonic CD. It includes multiple playable characters, original levels, and time travel elements. •
Sonic.EXE - The Game is a 2D
Sonic horror game made in
GameMaker. A playable adaptation of the 2011 creepypasta
Sonic.exe, the game went viral after YouTuber
PewDiePie uploaded a
Let's Play of the game onto YouTube, consequently driving new attention to the source material. •
Sonic Galactic is an upcoming 2D
Sonic game and imagining of a
Sonic game on the
Sega Saturn. The second demo, which released in January 2025, was well received, the game often being compared to
Sonic Mania. The game features Sonic, Tails, Knuckles,
Fang the Sniper, and a new character: Tunnel the Mole, as playable characters, alongside new levels and mechanics. •
Sonic the Hedgehog RPG (also known as
Sonic SatAM RPG), is a 2D
episodic role-playing Sonic game made in
Love2D by a team led by Reggie "RedG" Meisler. The game is set in the universe of the
1993 Sonic the Hedgehog animated series. , five episodes have been released. Sixth episode is in development.
Unofficial ports The following are unofficial ports and remakes of
Sonic games for various systems: •
Somari is a
pirated version of
Sonic the Hedgehog released for the
Nintendo Entertainment System in 1994. However, rather than starring Sonic, the game features a character named "Somari", who is essentially
Nintendo's mascot
Mario wearing
Miles "Tails" Prower's shoes and using Sonic's movesets. There are many other versions of this game with different titles, characters and level order, with some featuring Sonic as a playable character in place of Somari. Years later, a fan developed a ROM hack of the original
Sonic the Hedgehog based on
Somari. •
Sonic 3: Angel Island Revisited (also called
Sonic 3 A.I.R.) is a port of
Sonic 3 & Knuckles to PC and mobile devices based on the ROM file for the original Genesis release. The port was first released in 2019. •
Sonic 1 SMS Remake and
Sonic 2 SMS Remake are unofficial remakes of the 8-bit
Sonic the Hedgehog and
Sonic the Hedgehog 2 Master System games, released in 2019 and 2020 respectively for
Microsoft Windows and
Android. The remakes feature widescreen gameplay and add new playable characters, levels, and game mechanics from other
Sonic games. • A
Commodore 64 port of the 8-bit
Sonic the Hedgehog was released on December 21, 2021. It is the first game to require the
REU expansion cartridge, due to the game's intensive design for the C64 base hardware. •
Sonic Chaos is an unofficial remake of the
8-bit 1993 game
of the same name. It features
Sonic Mania-style gameplay elements, sprites and graphics, as well as new
game mechanics and
boss fights. The remake is in development. •
Sonic P-06 is an unofficial remake of
Sonic the Hedgehog (2006) for Windows powered by Unity. It is in development and has released several demos. •
Zippy the Porcupine is an
Atari 2600 demake of the original
Sonic the Hedgehog. • A
tech demo based on the 16-bit version of
Sonic the Hedgehog was created for the
Super Nintendo Entertainment System, featuring the third act of
Green Hill Zone. The demo was developed with the original game's code optimized for and playable on Super NES hardware. •
Unleashed Recompiled is an unofficial PC port of
Sonic Unleashed, released in March 2025 from a team led by Skyth, known for making mods of
Sonic Generations. It features numerous built-in enhancements such as support for higher resolutions and frame rates, as well as an easy-to-use installer and built-in achievements. Users are required to supply their own copy of the
Xbox 360 version of the game and its downloadable content, which can be transferred from an unmodified console to a PC.
Mods and ROM hacks The following are some of the
modified versions of existing
Sonic games, created using special programs and utilities. •
Unleashed Project is a mod of
Sonic Generations developed by Team Unleashed, consisting of modders Dario FF, S0LV0, ChimeraReiax, and MilesGBOY, that ports most of the daytime stages from
Sonic Unleashed. The mod additionally features new textures and shading techniques designed to mimic those featured in
Sonic Unleashed, and a revamped hub world. •
Sonic the Hedgehog Megamix is a total conversion mod of
Sonic the Hedgehog developed by Team Megamix. The modified game features redesigned levels and multiple playable characters, each with unique abilities. Originally created on Sega Genesis hardware,
Sonic the Hedgehog Megamix was eventually moved to the
Sega CD in order to take advantage of the system's improved storage and CD audio capabilities. •
Super Mario Generations is a mod of
Sonic Generations developed by Daku Neko that replaces characters with those from the
Mario series, and alters some of the sound and graphical effects of the game to make it more close to that of
Mario. It is notable for making an appearance in the modding section of ''
Guinness World Records 2017: Gamer's Edition''. •
Motobug the Badnik in Sonic the Hedgehog is a hack of
Sonic the Hedgehog that replaces Sonic with a Motobug, as well as altered stage design in a few levels. The programmer, Cody "Polygon Jim" Lawrence, died in 2013; the Motobug that Heavy Rider rides in
Sonic Mania was later named "Jimmy" and given a similar jumping animation as a tribute. •
Knuckles in Sonic 1 is a hack of
Sonic the Hedgehog created by Simon "Stealth" Thomley which replaces Sonic with
Knuckles the Echidna, complete with his moveset and sprites from
Sonic & Knuckles. Thomley would later assist with development on
Sonic Mania and the
Retro Engine ports of the Genesis
Sonic trilogy. •
Sonic 1 Boomed is a hack of
Sonic the Hedgehog that implements Sonic's redesign from the
Sonic Boom animated series, and adds numerous voice clips for Sonic and Dr. Eggman that play throughout the game, such as when the player jumps or collects rings. •
Sonic 2 XL is a hack of
Sonic the Hedgehog 2 that replaces the game's golden rings with
onion rings that cause Sonic to become morbidly obese when he collects them, noticeably slowing him down and hindering his jump and ability to Spin Dash. If Sonic gets too obese, he'll lose a life, but he'll lose weight over time by simply running for a while, and hitting
? monitors will instantly remove all his body fat. The primary challenge of the hack is to collect as few rings as possible. •
The S Factor: Sonia and Silver is a work-in-progress multi-level hack of
Sonic the Hedgehog which centers around Sonia the Hedgehog, Sonic's sister who appeared in the TV series
Sonic Underground, and
Silver the Hedgehog, a time-traveling, psychokinetic hedgehog who first appeared in 2006's
Sonic the Hedgehog, who each have unique abilities. Scourge the Hedgehog from
Archie Comics'
Sonic the Hedgehog comic series can also be unlocked. •
Yoshi in Sonic the Hedgehog 2 is a hack of
Sonic the Hedgehog 2 that replaces Sonic with
Yoshi, complete with his abilities from ''
Yoshi's Island''. •
Sonic 2 Long Version is a hack of
Sonic the Hedgehog 2 that attempts to restore the scrapped levels from the original game's development cycle, such as Sand Shower (or Dust Hill), Genocide City (or Cyber City) and Hidden Palace. • An unofficial
Hebrew translation of the original
Sonic the Hedgehog was released by Barashka in 2017. • '''''Sonic 3D Blast: Director's Cut'''
is a hack of Sonic 3D Blast'' (Genesis) released by the game's lead programmer,
Jon Burton, in 2017. It features improved controls and gameplay additions not seen in the original version, such as a level editor, a password save system, time attack challenges, and the ability to transform into Super Sonic. • ''''''''
is a ROM hack of the 1999 Nintendo 64 fighting game Super Smash Bros. It retains the gameplay style of the original release while adding new gameplay modes, stages, and characters. An update to the mod in February 2022 added Sonic and Super Sonic as playable characters, along with Sonic the Hedgehog''-themed stages and music. •
The Akaneia Build is a ROM hack of the 2001
GameCube fighting game
Super Smash Bros. Melee. Among others, the mod adds Sonic and Tails as playable characters, in reference to a well-known
April Fools joke from the April 2002 issue of
Electronic Gaming Monthly. •
Sonic the Hedgehog 4 (not to be confused with the official
Sonic 4) is an
unlicensed Super NES game and a ROM hack of
Speedy Gonzales: Los Gatos Bandidos (1995). Featuring Sonic in place of the eponymous character, the player can collect rings and free Nintendo's Mario (replacing the mice from the original game) from an assortment of cages. • Originally exclusive to the
Wii U,
Sonic Lost World Yoshi and
Zelda-themed
DLCs were recreated in the game's PC version as mods. •
Sonic Generations First Person Mod is a mod of
Sonic Generations created by
Twitter user Skyth that puts people in the POV of Sonic with no camera stabilization. The mod was released in a tweet, saying "POV: you're sonic", and "warning: this video is going to badly hurt your eyes", and to also play at the user's own risk, due to the mod majorly being vomit inducing. •
SM64 Generations (not to be confused with
Super Mario Generations (see above)) is a mod of
Sonic Generations. Players take control of
Mario in place of Sonic, accompanied by his 3D model, movesets, and physics from
Super Mario 64. The differences between Sonic and Mario's gameplay results in some levels becoming extremely difficult or impossible to complete. •
Hellfire Saga is a hack of
Sonic 3 & Knuckles created by Red Miso Studios. The hack features a new campaign where Sonic battles monsters, demons, and other hellish foes as he tries to escape to his home world. The hack is heavily inspired by games such as
Castlevania and
Ghosts and Goblins, and uses many elements from its games, such as bosses, music, and art. The hack was in development for five years, and was released on January 30, 2023. •
Sonic Forces Overclocked is a mod of
Sonic Forces that includes new levels, voiced cutscenes, and a storyline set after the original game. • ''''''''
is a mod of Shadow the Hedgehog'' that restores music, dialogue and art
cut from the original release, and makes numerous gameplay changes, which include modifications to certain gameplay mechanics as well as lowering the completion requirements of some of the game's missions. •
An Ordinary Sonic ROM Hack is a hack of
Sonic the Hedgehog created by Cinossu in 2013 that is inspired by the 2011 creepypasta
Sonic.exe, where the goal is to reach the end of each level while avoiding the eponymous character chasing towards the player in a demonic world that the player will be randomly transported into at certain intervals. Static monitors in said world will allow the player to return to normalcy and finish the levels as usual, otherwise they will be taunted by the eponymous character at the end of each level. •
Sonic the Hedgehog (2006): Legacy of Solaris is a mod of the Xbox 360 version of
Sonic the Hedgehog (2006) developed by "JotaroPowered" and the Lost Legacy Team, a collection of
Sonic the Hedgehog (2006) modders. It makes numerous changes to the gameplay, including reimplementing unused concepts and content removed from the original game, adjusting the game's physics to be closer to those in
Sonic Adventure, tweaking character abilities and level designs, and adding re-imaginings of DLC content that were planned to be released, but were not. ==Series and films==