Sonic the Hedgehog 2: Pink Edition is a character swap hack of Sonic the Hedgehog 2 for the Sega Mega Drive/Genesis, with Amy Rose and Cream the Rabbit replacing Sonic the Hedgehog and Tails respectively. Amy Rose's sprites are designed after her modern look. Amy Rose with classic-style sprites is available to play in the Amy Rose in Sonic the Hedgehog 2 hack. The game was modified by Sonic Retro Member E-122-Psi, with additional programming and coding by other members including MarkeyJester, MainMemory, FraGag, Selbi, and Hayate. Most programming unique from Amy In Sonic 2 such as Cream the Rabbit's gameplay was implemented by Flamewing.

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 the Hedgehog Plus (often called Sonic 1 Plus) is a hack of Sonic the Hedgehog by Hivebrain. The hack is basically the same as the original game, except with a number of extra features and bugfixes.

"Sonic X Freedom Planet" that's "Sonic Cross Freedom Planet". A game that crosses the universes of [Sonic The Hedgehog] and [Freedom Planet].You will be able to play as [Three] characters once we've managed to implement them all.This hack came about after I completed the hit indie game "Freedom Planet" which started off as a Sonic fan-game.Ever since beating it I've always wondered how Lilac would look and feel in the Sonic environment. And this is the start of something great I feel.This hack made by "Team Chasers" and based on Sonic 1.

Sonic: South Island Warped is a currently in progress hack of Sonic the Hedgehog. It's main point of interest is the return of the time travel mechanic from Sonic CD, along with a few other new features added to set it apart from the original Sonic 1. Zones are split into four acts each; three main acts and and a boss act at the end. Sonic is capable of traveling to the past or the future of the zone he's currently in via the signposts hidden in each of the levels. Each act, sans act four, has a robot generator that, when destroyed in the past, will remove all badniks for the rest of the act and also create a good future for that act. Destroying all three generators for a zone will remove Eggman's influence in the fourth act, which always takes place in the future.Time Stones also return, collectible alongside the Chaos Emeralds. One Time Stone will be hidden in each zone, and it will only be obtainable within the future of that zone. If attempting to retrieve the Time Stone in the bad future, Sonic will have to face off with one of Eggman's machines. If in the good future, the Time Stone will be unguarded and ready to be collected. The fourth act of a zone contains no generators, Time Stones, or signposts, only a boss fight against either Eggman or Metal Sonic. The Chaos Emeralds will be obtained during these boss fights, usually right after the boss is defeated, but you may also be able to reach it before the boss does, preventing it from making the fight more difficult.As of now, this is just a demo of GHZ, which even on it's own is still in need of much work. Honestly there's a lot I couldn't get around to doing just yet, but I still wanted to give everyone a sample of what I'm making. More than anything, I just hope you all enjoy what you play. Everything in this is release was done by me with the exception of the sound driver and the one original song port done for this hack. Both of those were by Varion Icaria who I can't thank enough for helping out. Also have to give a thanks to the many users of both Sonic Retro and SSRG who made all of the informative guides and tutorials hosted on both sites.

Space Invaders (スペースインベーダー, Supēsu Inbēdā?) is an arcade video game developed by Tomohiro Nishikado and released in 1978. It was originally manufactured and sold by Taito in Japan, and was later licensed for production in the United States by the Midway division of Bally. Space Invaders is one of the earliest shooting games and the aim is to defeat waves of aliens with a laser cannon to earn as many points as possible. In designing the game, Nishikado drew inspiration from popular media: Breakout, The War of the Worlds, and Star Wars. To complete it, he had to design custom hardware and development tools. It was one of the forerunners of modern video gaming and helped expand the video game industry from a novelty to a global industry (see golden age of video arcade games). When first released, Space Invaders was very successful. The game has been the inspiration for other video games, re-released on numerous platforms, and led to several sequels. The 1980 Atari 2600 version quadrupled the system's sales and became the first "killer app" for video game consoles. Space Invaders has been referenced and parodied in multiple television shows, and been a part of several video game and cultural exhibitions. The pixelated enemy alien has become a pop culture icon, often used as a synecdoche representing video games as a whole.

Sparkster (スパークスター, Supākusutā?) is a 16-bit generation side scrolling platformer produced and released in 1994 by Konami for the Super Famicom/Super Nintendo Entertainment System, directed by Hideo Ueda (Axelay). It is a different game from the Mega Drive version, which bore the full title of Sparkster: Rocket Knight Adventures 2, and has no plot continuity with the original Rocket Knight Adventures for the Mega Drive.