Tails Adventure (InstanceTopic, 17)
From Compile Worlds
Tails Adventure, sometimes written as Tails' Adventure, is Tails' second solo adventure, the first being Tails SkyPatrol. It is a puzzle oriented platformer, which requires heavy use of equippable items and backtracking. In it, Tails is vacationing on his home(???) island of Cocoa Island when The Great Battle Kuku XV and his army of deranged ducks bomb the crap out of the place looking for a DAMNED fourth Chaos Emerald. So Tails must protect the island....and find the Chaos Emeralds that somehow ended up on it.
While Tails and the Battle Kuku army are the only characters physically present, Sonic the Hedgehog, Knuckles the Echidna, and Fang the Sniper cameo as usable items that grant Tails their abilities. Tails also uses the Sea Fox in an underwater stage that may remind you a little too much of a certain other handheld Sonic game.