It's a random world, no mods initially, now it's shaders, inventory handlers

Hard difficulty, no rule changes.

I started it some time in 2015. Spawn is on an island, from one end of the island you can listen to the local ocean monument's guardians killing squid. I trim the world's chunks outside the local area before updates

I started a hardcore world at the same time, and that game is now really hard to lose, with 1.16 god armour

Closest thing to a forever world I did was in the middle of beta, back when biomes were more the product of smoothly varying numbers than hard-coded distinct regions with borders. Random seed, medium difficulty, solo, no mods, and gamerules weren't a thing. But it's long lost now.

My forever world didn't happen until I paid for a realm. Best 8 bucks a month I can spend. We have a massive cave system, an automatic item sorter, huge castle, built to scale Wrigley Field, a Mute City ice boat track, and more. And it's just really two of us. Been probably 3 years or so.

I started playing in 2010, but this is my first forever world. I intend on keeping the realm alive as long as Microslop allows it.

Long ago towards the beginning of our relationship, my wife and I had a world in which we found a mushroom island and terraformed it into a lush green place with 2x2 spruce trees.

It was a random seed, but we did look up where the island was. I've done some work to trim the chunks, since the latest update handles chunk borders really well.

It has not mods, but has had data packs, most of which are probably broken. The biggest of which is a hammer data pack that let's you break a 3x3 of blocks. The rest are mostly VanillaTweaks.

I'm pretty sure it was set to normal for villager conversions.

We have phantom spawning off, and 1 player sleeping.

It's been running for about 5 years with probably a 3 year gap.

A friend started and hosts our group of friends forever world.

did you use a random or pre-selected seed?

Random AFAIK, it may have had a few random generations before it was "good" but it definitely wasn't selected by seed.

did you allow friends or play solo?

Small group, 6ish people.

will you reset chunks to make room for new biomes/terrain features with updates?

We haven't yet. I'm not completely against the idea. We probably will at some point.

what mods did you use?

Vanilla, no mods except client side mods.

what difficulty did you select?

Hard, but some players are creative.

what gamerules did you change?

Sleep if one person wants to sleep.

how long has it been going?

3ish years? People play in bursts for a month or so. At the moment no one has really played in a few months.

I've had a few "forever" ones that fizzle out over a few years. First was started on a random seed, no cheats, no mods, standard difficulty level, with 5 of us playing. Over time we granted teleportation as the only cheat.

Second world was almost the same setup with a different group of people but in addition to teleportation, creative mode was allowed for building only.

Played a few with me niece and nephew where they were on tablets. The adults were allowed to use cheats mostly because the kids couldn't figure out how. We were just using them mostly in build mode to hide things because the kids kept stealing our diamonds or setting our houses on fire lol.

I decided to turn one of my older singleplayer worlds that I didn’t originally play on for long into my forever world. It was random seed, but I chose it because it had nice terrain.

Mostly it’s a solo adventure, but occasionally I’ll host it as a server and do a session or tour with a friend.

I never reset chunks, but I’m careful about the areas I explore to save space for new update content.

I don’t use vanilla-incompatible mods. When Mojang releases an update I want to be able to update my world without having to wait on mods to update to the new version. I’ve only created and added one datapack to delete my items and xp when I die.

I play on hard mode with no gamerule alterations.

I do impose a few rules on myself:

1. Item and xp loss on death.
2. No following tutorials or copying designs from the internet.
3. No utilizing mechanics that could be patched in the future, such as bedrock breaking or duplication glitches.

I’ve been playing on this world on and off for 5 years now. Its nice to be able to take a break for weeks or even months and still have everything exactly where I left off.