It is a spin-off of the Sonic the Hedgehog franchise, and one of two Game Gear games to star Sonic's sidekick Tails. Underwater he changes into the small submarine Sea Fox.Tails' Skypatrol is a 1995 horizontal-scrolling shooter video game published in Japan by Sega for the Game Gear. One of the most vital tools is the Remote Robot that can squeeze through small areas that Tails cannot reach. Per level however, he is only allowed to bring along four and this adds a tactical dimension.

In the twelve stages Tails can collect up to 26 items. He starts with ten health points that can be replenished with rings, but the amount can be extended to 99 by collecting chaos emeralds. Tails can walk, jump, fly (momentarily), hang on ledges and throw bombs. Unlike the other games in the series, this spin-off is less of a traditional platformer, but has a much slower pace with light RPG elements and a focus on puzzle-solving. While resting there, a large explosion occurs and a Flicky tells him birds are invading the island. Tails finds an unknown island and decides to dub it Tails Island. In the US and European version of the game it tells the story how Sonic and Tails decide to go separate ways for a while. There are however major plot differences between the Japanese and the western release.

Tails gears up and heads for his quest to find the machine parts to build his weapon to defeat the evil Battle Kukku. He also tells Tails that Battle Kukku is mining here for the Chaos Emeralds, to obtain it's power. A Flicky tells Tails that Battle Kukku has invaded the island. Suddenly, while relaxing, Tails hears an explosion that seems like it's coming from inside the island. It's an island pulled up by the Chaos Emeralds. Before Tails met Sonic the Hedgehog he lived on Cocoa Island, a place that isn't on the map.

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