Weather:
- Whirlpool - Add a whirlpool. It kind of acts like the Kraken where it shows up randomly and/or if you have a ton of loot and you have a galleon. (I'm not 100% how the Kraken works yet). If you start getting sucked into one you have to drop your anchor and hope that you're able to get out of its path. If you get sucked deeper into it you have to move your sail(s) with the wind constantly to get you out. If you get sucked in the middle you either barely survive or die.
Monsters/Sea Creatures:
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Hydra - Have a Hydra and have it act just like the Kraken in terms of how/when it shows up. When it does you have to constantly aim for its body. If you shoot/kill one of its heads (have it have like 6 to 8 heads) it grows two more. Either make it easy for people and just have the Hydra keep its body in one area and have a bunch of health or you could have it go back down into the ocean, which could give ships a chance to escape, and then pop back up at another angle.
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Sirens - Have them act like how sharks do except they only come to the islands and not the outposts. When walking around the island you'll start to hear beautiful singing and your body will start to turn towards it. If you let yourself walk over to it you'll see a beautiful mermaid (not that the actual mermaids in this game aren't beautiful) on the shore in the water and when you finally get up to them they eat your face/die right away. Now, if you first hear the singing and you start playing music you can drown it out and walk away from it. If there's a chest near one or you want to kill one, you have to bring a friend to either be the music player or the killer.
References:
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Peter Pan - The book is in public domain and just as long as you don't outright copy Disney or the play you will be good. You can either add an island called Neverland or Alway Flying. You could have a place called Fairy Isle where you see little sparks of pink/blue/green every once in awhile. There could be a place called Crocodile Bay where you hear a ticking noise randomly.
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Edmund Fitzgerald - Have a shipwreck called "The Wreck of the Edmund Fitzgerald".
Places/Things:
- Coral Reef - Have the merchants order you to get pearls/clams/crabs/etc. and you have to go find coral reefs (and not have them be like the reefs by the islands, I mean like huge, swim-through, colorful, reefs) that are located between islands that are deep enough to not hit your boat, but are not too deep so you don't die easily.
