Entertainment Software Rating Board

The Entertainment Software Rating Board (ESRB) is a non-profit organization that assigns age and content ratings for video games and mobile applications.

Early Childhood (eC)

 * Sonic's Schoolhouse
 * Tails and the Music Maker

Everyone (E)

 * Sonic the Hedgehog (1991)
 * Sonic the Hedgehog (8-bit)
 * Sonic the Hedgehog 2
 * Sonic the Hedgehog 3
 * Sonic the Hedgehog CD
 * Sonic & Knuckles
 * Dr. Robotnik's Mean Bean Machine
 * Sonic & Sega All-Stars Racing Transformed (3DS)
 * Sonic Drift 2
 * Sonic the Hedgehog Triple Trouble
 * Sonic Labyrinth
 * Knuckles' Chaotix
 * Sonic Blast
 * Sonic 3D Blast
 * Tails Adventure
 * Sonic R
 * Sonic the Hedgehog Pocket Adventure
 * Sonic Adventure
 * Sonic Shuffle
 * Sonic Adventure 2
 * Sonic Advance
 * Sonic Pinball Party
 * Sonic Battle
 * Sonic Advance 2
 * Sonic Advance 3
 * Sonic Heroes
 * Sonic Rush
 * Sonic Rivals
 * Sonic Riders
 * Sonic and the Secret Rings
 * Sonic Rivals 2
 * Sonic Rush Adventure
 * Sonic Riders: Zero Gravity
 * Mario & Sonic at the Olympic Games
 * Sega Superstars Tennis (DS)
 * Sonic Chronicles: The Dark Brotherhood
 * Mario & Sonic at the Olympic Winter Games
 * Sonic & Sega All-Stars Racing (DS)
 * Sonic Colors
 * Sonic Free Riders
 * Sonic Generations (Xbox 360, PS3, 3DS)
 * Sonic the Hedgehog 4: Episode I
 * Sonic the Hedgehog 4: Episode II
 * Mario & Sonic at the London 2012 Olympic Games
 * Mario & Sonic at the Sochi 2014 Olympic Winter Games
 * Sonic Boom: Shattered Crystal
 * Sonic World (Xbox 360, PS3, Xbox ONE, PS4, Wii U, 3DS)

Everyone 10+ (E10+)

 * Shadow the Hedgehog
 * Sonic the Hedgehog (2006)
 * Sonic Unleashed
 * Sega Superstars Tennis (Xbox 360, PS2, PS3, PC, Wii)
 * Sonic and the Black Knight
 * Sonic & Sega All-Stars Racing (Xbox 360, PS3, PC, Wii)
 * Sonic & All-Stars Racing Transformed (Xbox 360, PS3, PC, Wii U)
 * Sonic Lost World
 * Super Smash Bros. for Nintendo 3DS and Wii U
 * Sonic Boom: Rise of Lyric
 * Sonic World (PC)

​Teen (T)

 * Sega Superstars
 * Super Smash Bros. Brawl

Trivia

 * So far, not a single Sonic game has been rated above Teen.
 * However, no Sonic game that does not include any other character outside of the Sonic franchise has ever been rated Teen.
 * The K-A rating was replaced with the E rating in 1998.
 * The PSN version of Sonic the Hedgehog was rated E10+ until 2013.