Sonic: Before the Sequel - Aftermath

Sonic Before the Sequel (abbreviated Sonic BTS) is a fan game created by LakeFeperd that is meant to explain the events that may have taken place between Sonic the Hedgehog 1 and Sonic the Hedgehog 2. In it, the player plays as Sonic and Tails, alternating between the duo through numerous zones as Sonic goes to stop Dr. Eggman from launching the Death Egg, with Tails trying to keep up and eventually meet and team up with Sonic. An update was released during SAGE 2012, adding improved graphics, an original soundtrack made by Falk, KgZ, Andy Tunstall & Funk Fiction, and a bonus boss if you reach the good ending. A sequel, Sonic After the Sequel, and an interequel, Sonic Before the Sequel Aftermath (which has now formed into another fangame by LakeFeperd called Sonic Chrono Adventure), were released as well.

Sonic: After the Sequel (abbreviated Sonic ATS), is a fan game created by LakeFeperd that is meant to explain the events that may have taken place between Sonic the Hedgehog 2 and Sonic 3 and Knuckles. In it, the player plays as Sonic and Tails, racing through numerous zones as Sonic and Tails go out to stop Dr. Eggman from crashing the Death Egg into (and attacking), the new, mysterious island known as Angel Island. It is the sequel to Sonic Before the Sequel.

Sonic Chrono Adventure is the last in LakeFeperd's series of Sonic fangames made in Sonic Worlds, an engine built within Multimedia Fusion 2. It was developed at a time After The Sequel was feature-complete but also waiting for the sound team to finish composing their original soundtrack. Not wanting to exploit them, Lake went with existing songs for this final installment and released it in December 2013.

Sonic Utopia is an experiment that not only tries to expand on Sonic gameplay in an intuitive way in 3D, but also aims to capture the best of Sonic's style and tie it together in a cohesive experience. Nearly everything in this demo, from art to sound to the gameplay engine, was made from scratch.

Sonic Robo Blast 2, abbreviated as SRB2, is a fan game for Windows and DOS platforms. It is a 3D platformer developed by a group called Sonic Team Junior, using a modified version of the Doom Legacy source port of Doom, to allow for such things as optional analog control and true room-over-room (something not possible in the standard Doom engine), as well as the standard gameplay elements Sonic games are known for. It has been in the works since 1998 and is currently nearing completion, though several parts of the game are still missing. Sonic Robo Blast 2 is closely inspired by the original 2D Sonic games for the Genesis and attempts to recreate a game with this style in 3D, though it also borrows elements from the current Sonic games, such as Sonic's signature Air Spin Attack. Entirely original to SRB2 is its Multiplayer mode, a variation of classic first-person shooter games with Sonic elements. Due to being built with a modified Doom Legacy engine, the game is also very easily customizable. Custom levels, characters and even source code modifications can be created with the help of external editors.

A Sonic game introducing fast paced combat with limited open world areas involving story progress scenarios and side missions.

Sonic Horizons is an open-zone fangame inspired by Sonic Frontiers that aims to take the foundation of the open-zone formula that Frontiers established and expand on it in a different direction, focusing more on physics-based platforming/exploration, thinking outside the box, and generally forging your own path along the journey.

Sonic World DX is a Heroes-style fangame with over 15 playable characters and 10 unique stages!

Sonic Galactic is a 2D fan-game inspired by the Classics. Taking a more "Saturn" approach with its art direction, Galactic aims to be a sort of continuation to where the classics left off. Aiming to follow the classics, Galactic features new zones, brand new sprites, and a new character! This energetic mole is more than willing to join the team in their battle against Dr. Eggman! This has been a fan-game under the works for about 3 years, and is currently using Hatch Game Engine, an engine built from the ground up with accuracy perfectly replicating the classics.

Virtua Sonic is a virtual reality experience where you become the iconic hedgehog, traversing original Zones, defeating enemies, collecting rings and, of course, using the terrain to your advantage to achieve high speeds. Virtua Sonic features an all-new story, sure to tickle long-time fans of the series. This project's goal is to push the boundaries of what sorts of experiences are capable in virtual reality, showcasing the potential of the medium as it pertains to high-speed action games.