Tails Adventure, also known as Tails Adventures, is a Metroidvania game in the Sonic the Hedgehog franchise. It was released for the Sega Game Gear in 1995. It is one of three spinoff games that Tails received, the other two being Tails' Skypatrol, which was also on the Game Gear, and Tails And The Music Maker, which was for the Sega Edutainment System, the Sega Pico.
While taking a nap outside his house, Tails is woken by an explosion. The Battle Kukku Army has invaded the island in order to find the Chaos Emeralds, and it's up to Tails to stop them.
This title is different from other games in the Sonic series in that the emphasis is on visiting and revisiting different stages in a similar vein to Clash at Demonhead. Also, unlike previous titles, Tails actually reaps benefits from collecting just one Chaos Emerald (an increase in HP and Flight stamina).
The Japanese manual says this game takes place on Cocoa Island before Tails first met Sonic, while the Western manual says it takes place after Sonic and Tails' last adventure and Tails is on vacation on Tails Island.
It has a comic book tie-in in Sonic Universe, though it took a few liberties with the plot (such as it is). The Battle Kukku Army, referred to as the Battle Bird Armada, has since taken on a role as one of the major villain groups in Archie's Sonic series.
Tails Adventure features the following tropes:
- 100% Completion: You need to collect all Items and Emeralds.
- Adaptational Wimp: To fit in with the slower paced gameplay, Tails' default flight ability and speed are extremely nerfed compared to how he plays in the standard Sonic games. While the Chaos Emeralds do beef up his flight considerably, the Sonic item doesn't make him move as fast. This is averted in the Japanese version, in which the story takes place before Tails met Sonic, so it makes sense that he's not very fast nor knows the Spin Dash yet.
- Awesome, but Impractical: The Knuckles item. The concept of Tails punching his foes is awesome... until you find out how terribly short-ranged it is.
- Big Bad: The Grand Battle Kukku XV, the leader of the armada.
- Bungling Inventor: Tails is shown in this light in the closing credits.
- Busman's Holiday: In the Western manual's story, this game takes place during Tails' vacation.
- The Cameo: While Sonic and Knuckles do not appear in person, two items, the Sonic Item and the Knuckles Item, have their faces adorned on them. Fang also has his own item as well.
- Comic-Book Adaptation: Issues #16-18 of Archie's Sonic Universe comic.
- Continuity Snarl: The Japanese backstory has a minor one due to the presence of the Sonic and Knuckles items in a game that's supposed to take place before Tails met Sonic.
- Convection Schmonvection: Used in the Poloy Forest level. The entire forest has been set ablaze, but Tails strolls through without breaking a sweat or running into a lick of the flames. The flamethrower robot at the end of the level is another story.
- Cool Boat: The Sea Fox. It also functions as a Cool Airship once you find the Rocket Parts.
- A Day in the Limelight: Tails is the main protagonist of this game.
- Drop the Hammer: The (Pikkon) Hammer item, which allows Tails to smash barriers and enemies with an oversized mallet, much like a certain girl hedgehog.
- Electrified Bathtub: The Spark item for the Sea Fox works this way, sending a powerful jolt of electricity through the water that immediately kills any nearby enemies.
- End Game Results Screen: Post-credits, the game shows you your item collection ratio.
- Final Boss: The Big Bad and leader of the Kukku army is fought on his ship as the second opponent in a double-boss fight immediately after his son Speedy is defeated.
- Gadgeteer Genius: Tails is able to convert the Remote Robot into the Sea Fox.
- Gaiden Game: A spinoff that features Tails as the main protagonist.
- Good Luck Charm: The Fang item functions like this. Just bringing it with you will increase the chances of enemies dropping rings, no activation necessary.
- Hitbox Dissonance: Napalm Bombs, hornets, and hornet hives behave strangely together. Napalm Bombs will damage both of these things (including the big one that appears from destroying the hive) as long as they occupy the same vertical space. Even if it the sprite passes well under them, it'll damage them for no apparent reason.
- Infinite Supplies: Every one of Tails' projectile attacks have an infinite quantity, as does the Sea Fox.
- Invincible Minor Minion: Oddly enough, you get one in the form of the Remote Robot. Spikes, enemies, lava... nothing can kill it. All any of those things will do at most is send it back to you.
- Joke Item: The Radio. All it does is change the current level's soundtrack.
- Kid Hero: Tails.
- Leitmotif: The title screen music is woven into a couple of other tunes in the game, serving as a somewhat downplayed leitmotif for Tails.
- Metroidvania: While the game's levels are not all conjoined with one another, collecting upgrades and revising previous areas with said upgrades will open up new paths and even more upgrades.
- Mini-Mecha: The bosses of Poloy Forest, Volcanic Tunnel and Cavern Island are these.
- Monster of the Week: The Battle Kukku Army, in one of the very rare occasions where Dr. Robotnik is not the villain of a Sonic game and is completely absent from one.
- Night-Vision Goggles: A pair of infrared goggles are an item you can get, and are required to be able to traverse the dark caves of Polly Mountain 2.
- Oddball in the Series: A Sonic game that not only isn't centered around speed, but is a slow paced Metroidvania sandwiched in instead of a linear arcade like platformer. To say the least, it's a drastic change of pace for the series.
- Overlord Jr.: Speedy is said to be the son of the leader of the Kukku army. Appropriately, he's the last boss and the first opponent in a Sequential Boss fight before you meet his father.
- Permanently Missable Content: When you complete Coco Island, it will be replaced by the Battle Fortress, meaning that if you didn't collect the two items there (Teleport Device and Yellow Chaos Emerald), they'll be lost forever.
- Prequel: According to the Japanese manual, this game takes place before Tails met Sonic: which explains why he cannot run or Spin Dash on his own, yet.
- The Rival: Speedy, who Tails has to outmaneuver early in the game. Speedy returns as the penultimate boss of the game and the first opponent in a double-boss fight to end the game.
- Robot Buddy: The Remote Robot.
- Robot Me: The Remote Robot. Its name is even "Mecha Tails" when playing on a Japanese Game Gear.
- Self-Imposed Challenge: Beating the game with only one Chaos Emerald collected.note This leaves you with only 20 HP and a 6-second flight timernote to tackle the rather relentless latter half of the game. A total low-item completion run (using only the mandatory equipment) is also possible, to a point - the underwater cannon gauntlet that leads to Kukku Island is so punishing that getting through without the Mirror Armor is almost impossible.
- Sound Test: The Radio item acts as a portable Sound Test that you can use during gameplay.
- Spell My Name with an "S": In the Sonic Adventure DX: Director's Cut summary, Cocoa Island and Great Battle Kukku were properly translated, but they were respectively mistranslated as "Kokko Island" and "Great Badoru Kukku" in the Sonic Gems Collection manual. Also, Kukku Island is similarly known as Coco Island when the game is set to English - which may mean that it was supposed to be "Cuckoo".
- Stuff Blowing Up: Tails bombs that he can throw or drop as his main weapons, and has several variations, such as the Large Bomb,note Napalm Bomb,note Remote Bombnote and Triple Bomb.note
- This Is a Drill: The Sea Fox's bow-mounted drill bit, that can break through rock barriers underwater.
- Transforming Mecha: In several areas, the Remote Robot can transform into the Sea Fox to explore underwater.
- The Unfought: In the Archie comic adaptation, Tails doesn't even meet Grand Battle Kukku XV.
- Villain Respect: During the first battle with Speedy, if Tails makes it to the top of the stage in spite of Speedy's constant divebombing, he'll hand over a Chaos Emerald and leave.