Minecraft Data Packs / World Generation

Rainbeau's Sky Islands - "New Dimension" Version

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Rainbeau_Flambe avatar Rainbeau_Flambe
Level 40 : Master Wizard
(A Data Pack for Minecraft 1.16.2 - 1.16.5.)


- A world full of floating islands, hovering over an endless sea
- Sky islands of many biomes, at all altitudes, some underwater, and others near the world's ceiling
- New biomes, including strange "faux nether," "faux end," prismarine and crystal biomes


In this version of the data pack, the sky islands realm is a separate dimension, accessible from the overworld via custom portal. If you prefer to have the sky islands realm simply replace the overworld, please use the base version of the data pack.

In this version, you can access the sky islands realm via a portal constructed with polished granite blocks and activated with a flint and steel. But be careful! As portals connect to the same coordinates in both dimensions, it's easy to create a portal that isn't particularly useful. (For example, if you were to construct a portal on a high island in the sky islands world, you'd go through it only to find yourself at the other side on a tiny platform hovering far above ground in the overworld.)

You can build a portal in any of three different sizes, depending upon your style preference. You can use 10 blocks to create a 1x2 portal (the size of a normal doorway), 10-14 blocks to create a 2x3 portal (the size of a vanilla nether portal), or 12-16 blocks to create a 3x3 portal. Note that in the frame for a doorway-sized portal, corner blocks are required, but in the larger frames, corner blocks are optional. Automatically-generated return portals will always be 2x3, but can of course be rebuilt to match your preference.

Also included in this data pack is an optional "Rainbeau's Portals Resource Pack," which can be used to make the data pack's portals look a bit nicer.

In vanilla Minecraft, the sky is just... empty. There's so much of it, but there's nothing in it. Even the tallest mountains reach no higher than 100 blocks below the world's "ceiling."

Well, no more!

Now, the sky is full of floating islands, hovering over an endless sea!

Don't make the mistake of thinking, though, that you can just jump off the island you spawn on and swim to one that you like better. While the dive won't necessarily kill you, it's unlikely that the drowneds and guardians who make the sea their home would be so considerate.

And speaking of unfriendly denizens, be aware that far more villages than you're used to have been abandoned to the ravages of the undead. Don't assume that you've found a safe haven, just because you see houses on the horizon.

Amongst the islands, you'll find variations on all of Minecraft's vanilla overworld biomes. But that's not all. Whatever cataclysm created this bizarre world of gravity-defying land masses also tore through the walls separating dimensions, and so you'll also find islands that don't belong in the overworld at all, such as islands of netherrack and basalt, populated by piglins, islands of end stone, populated by flocks (herds? gaggles? murders?) of endermen, and even islands of prismarine and sandstone, populated by, well, honestly, not much at all.

You'll also find that all ores, gems and stone types can be found at any elevation. Given the nature of the world, elevation-based limitations really don't make much sense. This might seem overly generous, and certainly, for example, it makes it potentially easier to find diamonds early in the game. But bear in mind that there is substantially less mineable rock on a "Sky Islands" map than you're used to. Large-scale strip mining is literally impossible. So later in the game, resource scarcity is likely to become an issue, even given the adjustments I've made.

Along similar lines, and for similar reasons, I've adjusted emerald ore so that it now spawns in any overworld biome, rather than just in "mountains," which is frankly a rather meaningless concept now, anyway. But to keep things interesting, I've also adjusted infested stone (the type of stone from which silverfish emerge) so that it, too, can appear anywhere.

This data pack should be compatible with any data pack or mod that adds custom dimensions or otherwise alters world generation, at least unless that other data pack or mod expects you to construct portals with the same materials. Yes, that expressly means that you can use this version of "Sky Islands" in concert with either version of my "Water World" data pack.

CREDITS (Concepts): Special thanks go to Sanonasu. This data pack originated as an adaptation of his "Floating Islands" pack, and if he hadn't conceived of the idea and done the original world generation work, "Sky Islands" wouldn't exist! Similarly, the idea for the prismarine mesa biome and the "petrified" coral trees therein came from the prismarine cliffs and petrified forest biomes in MC_DA's "Many More Biomes" data pack, and my crystal mesa biome draws from that pack's frozen and crystallized forest biomes.

CREDITS (Portals): Like many other data packs that add new dimensions, this one utilizes Timber Forge's portal code.

-- Rainbeau Flambe (Darryl Burgdorf)
CompatibilityMinecraft 1.16

6 Update Logs

Update #6 : 03/27/2021 9:05:07 pmMar 27th

Redid turtle spawning to eliminate overpopulation issues

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03/28/2021 12:47 am
Level 9 : Apprentice Explorer
Hoaxenify avatar
Damn, it'd be better if it was on 1.16.5
03/28/2021 1:17 am
Level 40 : Master Wizard
Rainbeau_Flambe avatar
As I just posted in response to your other comment, I'd be very surprised if you found any data packs released for 1.16.2, 1.16.3 or 1.16.4 that didn't also work with 1.16.5.

1.16.2 was the last "major" release, inasmuch as that was the release that added support for custom dimensions.
02/16/2021 9:45 pm
Level 40 : Master Wizard
Rainbeau_Flambe avatar
Updated to allow for multiple portal sizes, and to fix turtle spawning. The optional resource pack was also updated to improve the portals' look and to accommodate the new size options.
12/21/2020 11:08 pmhistory
Level 3 : Apprentice Architect
Wrablin avatar
Looks great, going to try it out now, I think it's what I've been looking for all week.

I tried it out, and it is great.

Bug: found a place in the sky near an end (city?) tower that spawned many too many shulkers, I have a screenshot if you want to see it.
12/24/2020 10:16 am
Level 40 : Master Wizard
Rainbeau_Flambe avatar
Sorry for the slow response. I get a notification when someone posts a new comment, but not when someone edits an existing comment, and so didn't know you'd provided new info. :)

I'm not sure what might have happened, as I don't edit end cities at all. They're simply called in the data pack they same way they're called in the actual End. But I can certainly take a look.

I should be able to see the problem for myself if you just give me your world seed and the location of the city in question. :)
12/19/2020 4:45 pm
Level 1 : New Miner
MountainMac avatar
Always excited to see your Datapacks because they never fail to enhance my Survival playthroughs. Keep up great work. Super flat or Better Cave dimension next? :)
12/19/2020 10:14 pm
Level 40 : Master Wizard
Rainbeau_Flambe avatar
It's not exactly caves, but I *am* about to release a "Creeper World" dimension. Started out just as something silly, but kind of became semi-serious as I was playing with it. Not sure it's worth working on anything too cave-specific, though, since the next real update is all about caves, anyway.

As to superflat.... What would you suggest? I've always thought superflat worlds were boring. Good for creative building, but nothing else. Not sure how to make them more interesting without making them, well, not superflat worlds any more.
12/22/2020 6:06 pmhistory
Level 1 : New Miner
MountainMac avatar
Fair point with a Cave world. I usually use NoeVik14's Mining Dimension as to not mess up my worlds cave systems too much and for extra resource gathering. However what I really appreciate about your pack above other Dimension adding packs is specifically how you add unique structures to the dimension. The Idea of a "flat dimension" was just shooting ideas that I've not seen done, or done extremely well on planet Minecraft yet. (No shade to NoeVik14, His Mining world is a must have for me) I can only imagine a flat world would be a good place to have a new style of survival "main base" location or "villager defense base" Very excited to see what is in store with your Creeper world. I cannot even imagine what that might look like.

Ps didn't realize you'd posted it already. Downloading it now :)
12/17/2020 1:40 pm
Level 40 : Master Wizard
Rainbeau_Flambe avatar
Custom portals now operate a bit more like vanilla nether portals. You can construct them with just 10 blocks, instead of 14, and autogenerated return portals only have "platforms" if they generate in midair.
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