->''Long ago, far away in space, there existed a "Fantasy Zone" where a courageous hero called Opa-Opa (the Player) fought in a valiant cause to rescue the "Fantasy Zone" from its enemies.''
-->--'''The opening sentence at the beginning of the game.'''

''Fantasy Zone'' is a horizontally-scrolling ShootEmUp made by {{Sega}}. You control a ship called Opa-Opa, and have to bomb a set number of targets in each stage. Once these are destroyed, a boss will appear, which will have to be defeated to move on to the next stage.

The screen scrolls automatically whenever Opa-Opa moves to the left or right (except during boss battles). Defeated enemies leave behind coins, which can be used to purchase weapon, missile and speed upgrades from the shop, which appears once per level.

''Fantasy Zone'' was originally released in arcades and UsefulNotes/MasterSystem (both versions were developed simultaneously), but later saw ports appearing on the UsefulNotes/{{MSX}}, [[UsefulNotes/{{Famicom}} Family Computer]], UsefulNotes/NintendoEntertainmentSystem (a different port from the Famicom release), [[UsefulNotes/SharpX68000 X68000]] and the UsefulNotes/TurboGrafx16.

The game had a few sequels as well: ''Fantasy Zone II'' for the Master System, ''Fantasy Zone Gear'' (or just ''Fantasy Zone'') for the GameGear, and ''Super Fantasy Zone'' for the SegaGenesis. In 2008, a [[VideoGameRemake remake]] of ''Fantasy Zone II'', known [[FanNickname unofficially]] as ''Fantasy Zone II DX'', was issued in Japan as part of a CompilationRerelease, and Opa-Opa is a playable character in ''[[SegaSuperstars Sonic and Sega All-Stars Racing]]''.

Opa-Opa also showed up like a minor frequent character in ''Anime/RedPhotonZillion'', a SciFi {{Anime}} that Sega co-produced and made games based on.
!!Tropes used in the series:
* AdamSmithHatesYourGuts: Subverted in that items become more expensive each time you buy them.
* AdaptationExpansion: The version of ''Fantasy Zone'' featured on the ''Sega Classics Collection'' (which was originally part of the ''Sega Ages'' lineup) features four new stages and a handful of new upgrades, although they have to be unlocked first.
* [[spoiler:BattleInTheCenterOfTheMind: In ''Fantasy Zone II DX'''s best ending, it is revealed that the ''entire game'' was this invoked by Opapa to give Opa-Opa a chance to rid himself of the Nenon entities trying to coax his SplitPersonality of evil into dominance.]]
* BittersweetEnding: See [[spoiler:LukeIAmYourFather]].
* BossRush: The final stage in all of the games.
* ContinuingIsPainful: When you die, you lose all of your upgrades, even those you had in reserve. On some bosses, you have pretty much no hope of winning if you lose to them once. Time to start over!
** Though in ''Fantasy Zone II DX'', you're sent to a shop that sells only engines if you die to a boss so you can repurchase that extra speed you lost. You're still stuck with the Twin Shot and Single Bomb weapons and no special weapons though.
* CuteEmUp
* DualWorldGameplay: ''Fantasy Zone II DX'' replaces the "multiple areas" gameplay that the original ''Fantasy Zone II'' had with the "Bright Side" and "Dark Side" mechanic. Dark Side stages are more difficult than their "Bright" counterparts, but rewards you with more money. Depending on where you clear the stages you can get [[MultipleEndings different endings]].
* EleventhHourSuperpower: [[spoiler:You gain a health bar for the battle against the FinalBoss at the end of ''Fantasy Zone II DX'']].
* EveryTenThousandPoints: Subverted. You do not earn extra lives for score, but you can buy them in the shop (although their price increases each time).
* [[spoiler:FallenHero]]: In one of the MultipleEndings in ''Fantasy Zone II DX'' [[spoiler:Opa-Opa turns evil and casts the Fantasy Zone into chaos, and thus ''Space Harrier'' and his white dragon friend Uriah have to save the day]].
* GuideDangIt: Buying all the engines in the original game gives you unlimited ammo for any beam weapons you buy. Not that the game ever mentions this.
* [[spoiler:LukeIAmYourFather]]: [[spoiler:The FinalBoss of the first game is none other than Opa-Opa's long lost father. This leads Opa-Opa into questioning if his victory [[WasItReallyWorthIt was worth this price he had to pay]]]].
* MirrorBoss: [[spoiler:The FinalBoss of the second game is Opa-Opa's evil personality in physical form who attacks using the same weapons Opa-Opa can use.]]
* MultipleEndings: ''Fantasy Zone II DX'' has three of them depending on which stage types you clear [[spoiler:and whether or not you use the Drop Tears weapon on the FinalBoss]].
* OneHitPointWonder
* PinballScoring: Has reasonable scoring unless you're skilled enough to beat the game. You'll receive a bonus of several million points[[note]]4,000,000 + (10*gold)[[/note]] and [[NewGamePlus start back at the beginning]] where if you're really skilled, you can do it again and again. If you're a god of this game, you can get [[{{Cap}} 99,999,990 points]].
* SapientShip: Opa-Opa.
* SpreadShot: Each game has a variant of it. The original had the 7-Way Shot, one of the most useful in the game. Some of the sequels had the 3-way Shot instead.
* TooFastToStop: The faster engines you can buy make your ship much more difficult to control.
* UnstableEquilibrium: You lose all your powerups when you die, and you have to kill enemies to earn money. Should be pretty easy to see how this comes into play.
* YouKilledMyFather: Opa-Opa's father is killed by the Dark Menon Forces in the opening to ''Super Fantasy Zone''. Opa-Opa then vows to defeat the enemy's mastermind for this reason.