Shadow the Hedgehog

Main series
2D: Sonic the Hedgehog (GG/MS) • 2 (GG/MS) • CD • Chaos • 3 & Knuckles • Triple Trouble • Advance • Advance 2
Advance 3 • Rush • Rush Adventure • Colors (DS) • 4: Episode I • 4: Episode II • Mania (Plus)
3D: 3D Blast • Adventure • Adventure 2 • Heroes • Sonic the Hedgehog (2006) • Unleashed • Colors (Wii) • Generations
Lost World • Forces

Spin-off series
Sonic Boom: Rise of Lyric
Mario & Sonic: Mario & Sonic at the Olympic Games • London 2012 • Sochi 2014 Winter Games • Rio 2016
Platforms: Knuckles' Chaotix • Shadow the Hedgehog • Secret Rings • Rivals 2 • Black Knight
Racing: Drift • R • Riders • All-Stars Racing (DS) • All-Stars Racing Transformed • Team Sonic Racing
Mobile: Runners
Games: Spinball • Dr. Robotnik's Mean Bean Machine • Labyrinth • Fighters • Battle
Chronicles: The Dark Brotherhood

Related series
Games: Super Smash Bros. Brawl • for Wii U & 3DS (3DS • for Wii U) • Ultimate
Crossovers: Sonic's Schoolhouse • Angry Birds Sonic Dash Epic • LEGO Dimensions
Unlicensed: Somari • sonic.exe • Green Hill Paradise: Act 2 • Project Survival • Time Twisted • Before the Sequel
After the Sequel • Before, After & During the Sequel • Robo Blast 2
Others: Big's Big Fishing Adventure 3 • Sonic 25th Anniversary Party
Fake games: Adventures of Sonic the Hedgehog • Adventure 3 • Shadow and the Snow Queen • 2: Special Edition

Frequently Ripped Tracks
Main series: Grand Metropolis • Green Hill Zone • Live and Learn • Mystic Mansion
Stardust Speedway Bad Future (JPN/PAL) • Unknown from M.E.‎

Others
Albums: CD Grand Beta
Characters: Dr. Robotnik