Sonic The Hedgehog: The Lost Worlds is a hack of Sonic the Hedgehog 2 by ExecByte. This hack features all of the zones that were cut from Sonic 2 during development. Some zones have been ported from the Sonic 2 Simon Wai prototype and then finished up, and some have been created based on magazine pictures and information from interviews with people who worked on Sonic 2.

Sonic the Hedgehog refers to the Sonic the Hedgehog video game series released by Sega, and starring its eponymous mascot, the video game character Sonic the Hedgehog. The video game series is the primary product in a multimedia franchise, including products in a wide range of media.

Sonic the Hedgehog refers to the Sonic the Hedgehog video game series released by Sega, and starring its eponymous mascot, the video game character Sonic the Hedgehog. The video game series is the primary product in a multimedia franchise, including products in a wide range of media.

Sonic: The One Ring is a hack of the original Sonic the Hedgehog game for the Sega Mega Drive / Genesis, created by Mercury. Its defining (and titular) feature is that in each Act, all rings but one have been removed, and Sonic cannot complete the Act without this One Ring in his possession. Thus, in each Act, Sonic must search for the One Ring that will afford him the opportunity to progress. Several alterations have been made to the game, to somewhat balance the lack of rings, and allow backtracking during the search.

A hack based on Sonic 1 made by Ashuro.Credits:-MarkeyJester, for his ASM tutorials and helps.-FireRat, without him, which things would not have been possible.-FraGag, my Canadian neighbor who helped me to better understand the asm (because he speak French).-GenesisDoes, who helped me to understand how to import and work with objects in a rom.-ValleyBell, without him, which i could never make my own smps songs.-Natsumi, TheStoneBanana, StephenUK, PacGuy for being patient with me on the "Basic questions & answer thread".-Clownacy, a great moderator, thank you for the helps.-A-S-H, to improve me in my SMPS work.-Frenzy-Frenzless, my AFTERLIFE partner, who helped me to find gameplay ideas.-Mercury, because its ReadySonic open-source helped me to translate Github's ASM to Hivebrain 2005.-RedHotSonic, to have tested my previous rom-hack and helps.-ProjectFM for many things like some music and asm help.

Sonic 2 Long Version (which is released alongside Sonic 2 & Knuckles Long Version) is a more complete version of Sonic 2, which makes it somewhat similar to Sonic 2 Delta. This hack features four levels originally scrapped during Sonic 2's development. No levels have been changed, only added. This hack was written in hex, without the aid of any special hacking programs, because the creator uses a Mac, and no hacking tools had been released on that platform at the time of development.

Sonic the Hedgehog 3 (Nov-3-1993 prototype)...You can get more information's about this prototype in the hidden palace website, here is the link:https://hiddenpalace.org/Main_Page

Sonic And The Mystic Gems (previously known as Sonic 1 Harder Levels) is a hack made by Eduardo Knuckles and his team Harder Project of Sonic the Hedgehogon the Sega Mega Drive/Genesis. The hack adds to the game a lot of new features such as the three known main playable characters, a checkpoint monitor, customizable level music playlist, a sweet and clear save data select menu, difficulty selection, a unique music menu and some other additional menus and screens which gives to the game a completely new gameplay experience.