Sonic USB Online is a free multiplayer fangame based on the Sonic the Hedgehog universe, developed in Clickteam Fusion by Selphy Geumja. The project has been in development for over a decade and continues to grow with the help of a dedicated fan community and numerous contributors. Despite its name, "USB" does not refer to a physical device, but rather symbolizes the connected, shared, and community-driven nature of the game.Sonic USB Online offers a multiplayer experience inspired by the classic Sonic platformers, blending speed, exploration, and customization. Unlike official Sonic titles, it emphasizes online play, community-driven events, and unique gameplay systems including pets and original characters. It is distributed as a free, fan-made game with no commercial intent. i used chat gpt, as he knows a lot about the game (its personal information, if you use chat gpt, he will not be able to give you those infomation) The game is built using Clickteam Fusion Developer 2.5+, a visual programming engine. Initially created as a small prototype, it eventually evolved into a full-featured online platformer. The creator has publicly clarified that no AI tools were used in the development of the game, and all content—code, art, sound—is the result of human effort. Due to the nature of the engine, the .exe file may trigger false positives in some antivirus software, a known issue in Clickteam-based projects.

You can download the game here: https://gamejolt.com/games/sonic_usb_online/765214

Sonic USB Online is supported by a wide range of contributors, artists, testers, and community members, including:

Mapingua – Bug testing, trailer creation, community support

Your Mom – Bug reports, sprite work

Miniluv – Sprite sheets for Trip the Sungazer

Johnnie Electronic – Original character creation

Akimaca – Additional character design

Kaching720 – High-quality Mario & Luigi pixel art

Noobis, Toonskin, Testapk, Darby BTG – Videos, pets, events

Scarlett – Artwork and pet creation and commissioned work

Troopsushi – Sprites for Amy Mania

Dolphman – Resource sharing and support

Emi – Drawings and positive energy

P10 – Long-time contributor

Maniamadnez – Sprites for Surge and Blaze

TheCrushedJoyconDC – (music's, character sprites, level creation)

a lot of other artists contributed directly or indirectly to the game creation

Sonic USB Online has been praised for: Its community-driven nature, Retro visual style reminiscent of 16-bit era games, The freedom of online multiplayer platforming, Staying true to Sonic’s spirit while introducing original ideas Despite being unofficial, the game has built a loyal following due to its creative direction and accessibility.

In the game the is over 40 characters and most of them are unlockable with all the of them being from the sonic universe, but some characters are from other games / TV chars / Movies

The Sonic USB discord: https://discord.gg/ENz6mHhT