Sega Mega World.

Sega Mega World.

Sonic the Hedgehog from Megadrive Fan magazine.

Sonic the Hedgehog from Megadrive Fan magazine.

Sonic and Tails, Game Gear.

Sonic and Tails, Game Gear.

Sonic Drift, Game Gear.

Sonic Drift, Game Gear.

Sonic Battle, Game Boy Advance.

Sonic Battle, Game Boy Advance.

Sonic Battle, Game Boy Advance.

Sonic Battle, Game Boy Advance.

Sonic the Hedgehog merchandise.

Sonic the Hedgehog merchandise.

Ad for Sonic Battle, Game Boy Advance.

Ad for Sonic Battle, Game Boy Advance.

"Aquatic Ruin Zone" from Sonic Generations.

Sonic CD 20th anniversary soundtrack.

Sonic CD 20th anniversary soundtrack.