I would like to play in a water world with deep oceans and islands everywhere, not just occasional ocean biomes. I have looked for a good seed, but nothing really shows up. I am wondering if there is a way I can hack to flood an entire world. Is there an effective way of raising the water level across the entire world?

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    Answer: Ya got a bucket? >:D
    – Neil
    Commented Jul 21, 2011 at 8:09
  • 6
    Or get a thesaurus, and start exploring seeds! :) 1. Try lots of words. 2. See which world has huge oceans. 3. Post it on Minecraft seeds. 4. ??? 5. Profit!
    – Cyclops
    Commented Jul 21, 2011 at 12:52
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    1335977250 is a seed that gives a water world in 1.8, but beware! There are no trees for days around the spawn. It's really only suitable for Creative mode. Commented Sep 25, 2011 at 4:23
  • @SevenSidedDie It is so beautiful. I loaded that seed and sure enough. There was nothing but water around my tiny little island for as far as I could see. Now trees will be an issue. I don't have to worry about reinstalling the mods now. :-)
    – Wulfhart
    Commented Sep 26, 2011 at 16:15
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    Well, you level a bunch of land to create a bunch of settlers which will give you enough mana and you can then invoke the Flood power! This will raise the water level by one block across the entire map. Oh, wait, you were asking about Minecraft. Nevermind.
    – Task
    Commented Apr 4, 2013 at 15:02

8 Answers 8


Try out the Bukkit plugin called Terrain Control. It features the ability to change the water height by modifying the config. However, you will have to run a Bukkit server on your local network to use it.

As of snapshot 14w17a, it is now possible to customize the water level ingame. When creating a new world, this can be achieved by clicking More World Options..., changing the World Type to Customized, and then selecting the Customize button. Here, you can change the sea level by moving the slider that says Sea Level, as well as many more options.

  • Do you know of a Bukkit plugin that will do it? "Probably" is not as specific and helpful as it could be. Commented Apr 6, 2013 at 10:33
  • @SevenSidedDie So far I have not been able to find a Bukkit plugin, but I know that it is possible.
    – tomb
    Commented Apr 6, 2013 at 10:34
  • @SevenSidedDie Just found one that appears to be able to change the height.
    – tomb
    Commented Apr 6, 2013 at 10:39
  • I looked these over and as far as I can tell only Terrain Control can change water level (using the WaterLevelMax:64 variable). Terrain Control even says it's meant as a updated replacement for PhoenixTM. I'll give you the bounty if you rewrite this answer to feature that plugin prominently! Commented Apr 7, 2013 at 19:18
  • @SevenSidedDie Done.
    – tomb
    Commented Apr 8, 2013 at 3:05

Update: With the introduction of the ocean biome in beta 1.8, it is possible to play in a "water world" without needing to raise the sea level, by finding a seed which starts you in the middle of such a biome. Seeds can be found wherever Minecraftians congregate, including the official forums and Reddit.

Even with a world editor, you cannot flood "the whole world", because the world is procedurally generated as you explore it. The best you could get would be to flood the areas of the world you've already seen.

Instead, you should look for mods which affect world generation. A quick search of the mod forum turns up the Phoenix Terrain Mod, which has a waterLevel setting (default 64) as well as many others which may help you achieve the effect you're looking for.

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    Good point about the procedurally generated world. Commented Jul 21, 2011 at 5:09
  • This worked like a charm. I set the water level to 80. I am now in a water world with islands every so often. I must say it is pretty cool. Thank you
    – Wulfhart
    Commented Jul 22, 2011 at 1:54
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    With Poenix Terrain Mod now hopelessly out of date, an update to this answer would be wonderful, if only a suitable replacement mod or plugin could be found. Commented Apr 3, 2013 at 15:21

The only possible way i can think of that might work for this is if you use the WorldEdit Mod, The only issue being though that this won't raise the properties for the actual world as i'm sure you've guessed. It'd be a very quick and easy way to modify the water levels in the immediate and surrounding areas though.


I hope you've got a few days spare, It's a hell of a mod to learn!


You can create a water world by going into the superflat customization screen (Create World > More world option... > World type: Superflat > Customize) and then choosing the "Water World" preset. Note that this will generate villages, so you might be able to get some wood and stuff by doing some diving. Have fun!

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    It will have a flat ocean bottom and no islands. The question isn't asking for that kind of water world. Commented Apr 4, 2013 at 21:22

There is a naturally generated survival island world that I play on occasionally. The seed is "Sprite". the S is capitalized.

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    Which version of MineCraft is that for? Every time they make changes to the terrain generation, the old seeds become "invalid" (or rather, they generate completely different terrain).
    – IQAndreas
    Commented Mar 4, 2014 at 9:13
  • This worked the last time I used it, but that was about a month ago. This may no longer be valid. I will try to check tonight. If it doesn't work, I will delete the answer. Commented Mar 4, 2014 at 18:58

Just create a customized world, and on the FIRST PAGE, and the FIRST SETTING, there will be a slider bar that lets you change the sea level. I seem to be the only one that can figure this out.

  • Except for, you know the first answer on the page that says the same thing.
    – TZHX
    Commented Mar 3, 2015 at 12:46

I believe in a snapshot before 1.8 there was a cusomize world option where you could just make a world to your specifications


Use world painter http://www.worldpainter.net/ and make a world with lots of islands

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