An early Strategy RPG made by Squaresoft (now Square-Enix) released only in Japan. It includes much of the Final Fantasy feel and characteristics, including spell names and the names of the dragons: Bahamut, Alexander, Leviathan, and Valefor, to name a few. The battle system is an early example of a Tactics-style game, and is well-loved for being practical yet Nintendo Hard.The game is set in the sky world of Orelus, and follows Heroic Mime Byuu as he leads the The Resistance against the Granbelos Empire. Along the way, he rescues his childhood sweetheart, Princess Yoyo. The princess, a summoner, has the ability to communicate with the Holy Dragons and use their powers in battle. The heroes attempt to collect their power to use against the empire, while Emperor Sauzer attempts to gather them for himself. Their battle against the Empire and the greater threat it unleashes range all across the sky and even into the world of origin for the dragons themselves. And Yoyo's experiences with the Empire weren't all negative...The game directly influenced Final Fantasy X. The plot structures and several key characters of the two games are very similar.Bahamut Lagoon is also notable for having very pretty graphics, being one of the last Squaresoft games to be released for the Super Nintendo. It's also notable for having quite explicit sexual content (though primarily in dialogue) and an openly gay old wizard as one of its main characters.A translation patch is available here.Compare Rudra No Hihou and Live A Live, two similar Japan-only games released by Square Soft near the end of their SNES era.
Arbitrary Headcount Limit: The number of units allowed on the field is determined by how many dragons are under your control, with four humans being assigned to each dragon.
Artificial Stupidity: Don't expect your dragons to differentiate between a switch and normal floor. Even if that switch will trigger a trapdoor that instantly kills four of your characters.
The enemy falls victim to this as well—they will always attack the unit that's dealt the most damage to them, even if that unit happens to be invincible or if there's a helpless healing party not too far from it. It also has a compulsion to always attack a single character, never next to a character, so you can easily exploit that to prevent splash damage.
Bonus Boss: The game has special "side quests" - essentially single battles - available throughout the game. One of them, appropriately named Hard Dungeon, is only available in the last seven chapters and is far more difficult than the final boss.
Distressed Damsel: Yoyo. A good part of the game is spent attempting to rescue her from the Empire. Associated tropes are subverted, though, in that she falls for her kidnapper and is actually the one of most powerful characters in the game, in terms of both story and gameplay.
Element Number Five: Earth, Light and Dark aren't visible in your dragons' stats. Earth is the first extra element, a dragon who knows Fire, Ice and Lightning magic can use Earth at the same level as its worst element. Then, a dragon with maxed out Earth, Healing, Poison, Strength and Defense will gain access to the Light and Dark elements. Very few monsters resist these elements, and finishing off enemies with them gives a chance to drop the best items in the game. Unfortunately, they also cost a lot of MP to cast.
Improbable Weapon User: While not having specific characters with improbable weapons, it does have various items that all characters can throw to cause damage or status effects. These items include Sweet Memory, Porno Mag, and Botched Cookie.
Jack of All Stats: Cross Knights Byuu and Palpaleos and to the lesser extent the Knights Rush, Truce and Bikkebakke.
The Kingdom: Every other nation besides the Granbelos Empire.
Kleptomaniac Hero Found Underwear: Byuu finds quite a number of "drawer things" - things from a drawer in the wink and nudge sense. You can also find "Princess' ???", usually in the suspicious location of Yoyo's bed. However, you can also find "Gunso's ???" by talking to him at pretty much any time...
Random Effect Spell: The Mini-Devils' Dances are entirely unpredictable; the pool of effects can be changed based on the dragon associated with them, but there's rarely more than about a 60% chance of getting a positive result. Results can range from various element attacks with varying ranges, healing your party, healing the enemies, healing everyone, putting targets to sleep or poisoning them, etc.
Then again, Palpaleos end up dead and Byuu wandering the sky on Bahamut's back, so Matelite still has his chances, thanks to the competition being gone (who said that thick headed loyalty did not pay?)
Unsound Effect: The "weird noises" that seem to pop up spontaneously during dialogue seem to indicate arousal (Donfan's trademark "boing" sound, natch), scheming (Ectarina's), and spitefulness (Mist).
Video Game Cruelty Potential: The game offers ample opportunities to rudely break poor Sendak's heart over and over and over again. ("I don't need any, you old man!")