Sonic Underground
The Hedgehogs congregate on the Floating Island in their latest effort to find their mother.
The Hedgehogs congregate on the Floating Island in their latest effort to find their mother.
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Sonic and Tails help a mermaid try to save her underwater city.
Robotnik lures Sonic into a round-the-planet vehicle race by threatening an orphanage.
Robotnik takes over a local amusement park called Mobiusland and changes the name to Robotnikland.
Robotnik shrinks Sonic and Tails with a shrink ray and puts them into his terrarium.
Sonic gets stuck with the job of baby-sitting three rambunctious baby groundhogs.
The Badniks go back to the Mesozoic Era and steal the Emerald of Life; Robotnik kills his Dumbniks.
Freedom Fighters are obliterated by a swarm of metallic fly-bots; Manic looks for the insects.
The Hedgehogs steal historical objects of Mobius from Robotnik.
The Hedgehogs discover that Sonia has inherited a castle; She basks in the idea of having a castle.
Robotnik organizes a track meet to lure Sonic into a trap.
Sonia is invited to a debutante ball, but she and her brothers must go on a mission first.
Sonic, Manic and Sonia stumble upon an oasis called Lake Valley Resort.
Queen Aleena's journals are buried in the city of Tashistan; Sonic and his siblings search the city.
Sonic, Manic and Sonia are told that ships are sinking due to the Mobian sea-beast.
Robotnik blackmails Cyrus by kidnapping his father and holding him hostage.
Sleet and Dingo plan to collect the taxes owed to Robotnik but keep it for themselves.
Robotnik launches a spy satellite in an effort to locate Knothole Village.
Sonic faces a dangerous vehicle during a solo mission to the Badlands.
Sonic is lured into a trap when a frustrated Robotnik announces a race.
Sonic and Sally encounter the Guardian while on a mission.
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