A game developed by Infinity and published by BroderbundSoftware, it was released in the US in 1990 for the NES. A side-scrolling adventure game based off the Greek story of [[NoCelebritiesWereHarmed Orpheus and Eurydice]]; the heroine in the game is referred to as Helene instead. The [[ExcusePlot story]] is that Helene has fallen victim to the bite of poisonous snake and has been taken to Hades. Orpheus rushes to her rescue upon hearing of this. The game combines many different Greek legends, culminating in monsters and items that are found throughout Greek mythology.

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!!''The Battle of Olympus'' contains examples of:

* AdaptationalHeroism: Circe. As opposed to her initial depiction in ''Literature/TheOdyssey'' as a [[TheVamp vamp]] who turned sailors into animals, this game turns her into a helpful witch who will sell Orpheus the Salamander Shield.
* AllThereInTheManual: The game makes no mention of Orpheus and Helene. The game allows the player to write the character's names with no default.
* AmbidextrousSprite: Orpheus.
* AncientGreece: The game takes place over many RealLife areas of Greece.
* {{Arcadia}}: You start out in the literal Arcadia. As expected, it's idyllic-looking and probably the least dangerous area in the game.
* AwesomeButImpractical: The Divine Sword's special ability, the Power of Argus, which shaves off a little {{H|itPoints}}P with each use, until the Bracelet of Ares is obtained.
* BagOfSpilling: The player's death results in the loss of half of the carried wealth (Olives). With a max of 99 Olives and a few items costing not too far less than that, add in the ease of death, and it becomes [[FakeDifficulty hard to obtain those items]].
* ChekhovsGun: The Moon Orb, which only has a use in the final battle.
* ClassicalMythology: Based on the myth of Orpheus and Eurydice, with various gods and monsters participating.
* CueTheSun: At the end of the game. You can even ''recue'' the sun after the credit roll.
* DamselInDistress: A rare case of the damsel having already ''[[NeverSayDie been taken to Hades]]'' [[NeverSayDie (read: died)]] when the story begins.
* DidYouJustPunchOutCthulhu: Hades goes down surprisingly quickly for a god.
* DivorcedInstallment: Of ''[[VideoGame/ZeldaIITheAdventureOfLink Zelda II: The Adventure of Link]]'', as is apparent from the basic gameplay. While it does do a good number of things differently, the fact that the both games share the exact same acceleration glitch used in [[{{Speedrun}} TASes]] that allow Orpheus and Link zoom through the game at warp speed suggest that at least some of the code was recycled.
* EverybodyHatesHades: In the myth, Hades had Eurydice because, you know, she died, and he can't just let dead people come back to life. In this game, he orchestrated Helene's death and intends to marry her. Or keep her as a statue. One of the two.
* FaunsAndSatyrs: A very low-level enemy in Attica.
* FetchQuest: Obtaining 20 Salamander Skins to trade for the Salamander Shield.
* FinalBoss: Hades, wearing his trademark Helm of Invisibility. Orpheus must use the otherwise useless Moon Orb to reveal only his shadow. After a certain amount of damage, the helm's magic ends and Hades is revealed (though his tactics remain the same).
* HeartContainer: Ambrosia, the mythological food of the Gods, increases the player's Max HP.
* InASingleBound: The Sandals of Hermes increase overall jumping ability to a tolerable level and allow the character to invert personal gravity and walk on the ceiling. No, they won't activate unless there's a ceiling to "fall" up to.
* KillItWithFire: The Staff of Fennel's fire ability, while nearly necessary to attack floor-crawling foes, is required to burn down red thorny hedges.
* LeapOfFaith: To find the salamanders (and the Ambrosia sold near them), you must jump into the correct {{Bottomless Pit|s}}. Out of all the bottomless pits in the game, there are a total of two (which are unmarked) that are not of the instant-death variety.
* MagicalMysteryDoors: Most of the mazes are like this.
* MagicSkirt: The hero's tunic doesn't obey the laws of gravity when inverting with the Sandals of Hermes.
* MalevolentArchitecture: Many of the late-game areas are geared to give monsters a much greater advantage, and several jumps require absolute precision (I'm looking at you, Phrygia and Tartarus).
* NintendoHard: It's a test of endurance and will to beat this game.
* SadlyMythtaken: Consider Eurydice being renamed Helene to be the first of many examples.
* [[ShopliftAndDie Shoplift and Lose Your Stuff]]: Do ''not'' try to buy from Ares when carrying insufficient olives. You will ''lose your shoes''.
* SuperDrowningSkills: Played straight.
* SwordBeam: The Divine Sword emits small short-range lightning bolts that drain the life from the player, unless you have the Bracelet of Ares. Also, the player can unlock the ability to throw fire from the Staff of Fennel.
* TakenForGranite: After the player defeats Hades, he encounters [[spoiler: a petrified Helene. The power of love (literally) quickly reverses this]].
* ViolenceIsTheOnlyOption: Remember when Orpheus was a musician? One who made it through the underworld by quelling threats with the beauty of his music?

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