How much RAM does a Society: Sunlit Valley server need?
A Society: Sunlit Valley server needs about 13 GB of RAM for five players, 18 GB for ten and 28 GB for twenty. With 351 mods in version 4.1.5A, Sunlit Valley sits in the large class of our rule, which starts at 8 GB for an empty server and adds about 1 GB for every player.
| Players online | RAM needed | Plan size | Lowest price for that size |
|---|---|---|---|
| 2 to 5 | 13 GB | 16 GB | CheapestMinecraftHosting Pro, €12.80 a month in Poland (Warsaw) |
| 6 to 10 | 18 GB | 24 GB | CheapestMinecraftHosting Crew, €19.20 a month in Poland (Warsaw) |
| 11 to 20 | 28 GB | 32 GB | CheapestMinecraftHosting Guild, €25.60 a month in Poland (Warsaw) |
The pack's troubleshooting guide recommends 6 GB for playing Sunlit Valley, and some computers get by with 4 or 5. A server runs more than one player's game: the farms, barns, fish ponds and shipping bins of everyone online, plus the Skull Cavern for whoever is down there. The same guide warns that WorldEdit raises the pack's RAM use by a very large factor, especially on servers, and reports Axiom and Sinytra Connector working well instead.
Against memory leaks, the pack ships AllTheLeaks, a mod that fixes leaks in some mods and in Minecraft itself, next to ModernFix and FerriteCore. The guide lists one more performance setting that is off by default: mixin.perf.deduplicate_location=true at the bottom of config/modernfix-mixins.properties. It stays off because it makes loading take much longer, a cost a server pays only when it starts.
Society: Sunlit Valley server pack and server files
The Society: Sunlit Valley server pack is the same pack your players install, minus the 40 mods that only run in a player's game. On CurseForge, version 4.1.5A from 26 September 2026 lists 351 mods, and the pack's own build file marks those 40 as client only, from Embeddium to FancyMenu, so the server runs 311. Next to the mods, it needs 4 folders of the same version:
| Folder | Files in 4.1.5A | What it holds |
|---|---|---|
| kubejs | 5,290 | Much of the pack's own game: shops, shipping bins, artisan machines, villagers and the Skull Cavern, in 188 server and 97 startup scripts |
| config | 1,079 | The quest book in config/ftbquests, the building blueprints and the settings of the farming mods |
| patchouli_books | 1,070 | The Farmer's Almanac and the Fish Finder books |
| defaultconfigs | 29 | Settings copied into each new world, such as the FTB Chunks claim limits |
Build the server from the CurseForge pack. The Modrinth upload, 4.1.5B from 7 October 2026, leaves out the mods that are not on Modrinth, among them FTB Quests, FTB Chunks, FTB Teams and FTB Backups 2, and asks players to download those after the game starts. A server built from that file lacks the quest book and the land claims until you add those mods by hand.
Each of the three hosts we compare installs CurseForge packs for you: Astroworld Hosting and Lodehost with one click in the panel, Cheapest Minecraft Hosting in its Mods tab. Some of those installs only fetch the mods, which leaves a Sunlit Valley server without its shops, machines and villagers, so open the file manager afterwards and look for the 4 folders. If one is missing, upload it from your own copy of 4.1.5A: in the CurseForge app, right-click the pack and choose Open Folder.
How to set up a Society: Sunlit Valley server
Setting up a Society: Sunlit Valley server takes 6 steps, and steps 3 and 4 come before the first start:
- Take 24 GB for a group of ten, or 16 GB for up to five, with Forge as the server type.
- Install Society: Sunlit Valley 4.1.5A from CurseForge in the panel, the version every player has in their launcher.
- Look for kubejs, config, defaultconfigs and patchouli_books in the file manager, and upload whatever is missing.
- Set the options you want in kubejs/startup_scripts/_config.js and the season length, both explained below, while the server is still off.
- Start the server, wait for Done and give yourself operator rights in the console; our guide to op yourself on a Minecraft server has the command.
- Send your group the address and the version number. In the server list, a green checkmark below the player count tells each player that their version matches.
Chunky ships with the pack, so the console can generate the land around spawn ahead of time: chunky radius 1500, then chunky start. Run it before the group logs in, so the server is not generating new land while everyone explores.
Society: Sunlit Valley server settings
Society: Sunlit Valley server settings sit in 1 file, kubejs/startup_scripts/_config.js, with 8 options that the pack marks as ones only the server needs to change. Edit them with the server off, because each takes a full restart:
| Option | Default | What it does |
|---|---|---|
| enableDeathDebt | true | Charges a fee when a player dies, so nobody dies on purpose |
| subSeasonDuration | 10 | Days per sub-season for the seeds that unlock in year 2; must match seasons.toml |
| multiplayerSharestones | false | Gives every new player a White Sharestone at spawn, for visiting each other's bases |
| disableHammersSkullCavern | true | Stops tools that break several blocks at once in the Skull Cavern, to prevent crashes |
| skullCavernHardmode | false | Makes blocks placed in the Skull Cavern decay after 30 seconds and torches after 1 minute |
| enableChatColors | true | Colours a player's chat by the dye in their curio slot; turn it off if another chat mod does this |
| clockIcon | true | Shows the clock icon on the HUD |
| susFunctionLogging | false | Logs extra detail to find the cause of crashes on large servers, and may flood the console |
For a group, multiplayerSharestones is the one to switch on: the pack has no other way to get a White Sharestone. Leave enableDeathDebt on unless everyone agrees, because the pack advises against turning it off.
How to change the season length in Society: Sunlit Valley
To change the season length in Society: Sunlit Valley, put the same number of days in 2 places on the server: sub_season_duration in config/sereneseasons/seasons.toml and global.subSeasonDuration in kubejs/startup_scripts/_config.js. The default of 10 gives each season 3 sub-seasons of 10 days, so a season lasts 30 days and a year 120. At 20 minutes per Minecraft day, a default year takes 40 hours of play.
Players do not have to copy the number. In 4.1.5A and 4.1.5B, the server sends its sub-season length to every player at login, and their game takes it over. The pack's troubleshooting guide still describes the manual fix for shops that sell the wrong items or crops that will not grow in their season: set the server's number in the player's own config/sereneseasons/seasons.toml.
The calendar only moves while someone plays. The pack sets progress_season_while_offline to false, so an empty server keeps its season until the next player logs in.
How to play Society: Sunlit Valley multiplayer
To play Society: Sunlit Valley multiplayer, everyone joins one server on the same pack version, and the pack adds 4 things for groups: land claims, a shared bank account, a coin leaderboard and multiplayer pig races.
Claims come from FTB Chunks. Each player can claim up to 500 chunks to protect a farm and force-load 15 of them, and friends who form a party with FTB Teams share their claims and their quest progress. For a joint purse, buy a Blaze Banker from the Banker villager and give each player a White ID Card to bind; the player who placed the banker adds the cards, and a White Card in its bottom-left slot opens the shared account from a Bank Terminal.
The day is shared too. Everything in Sunlit Valley moves on at 6am, the hour a bed wakes you: shipping bins sell, crops grow, and artisan machines and farm animals take their next step. Minecraft only skips the night when every player on the server sleeps, so a group can type /gamerule playersSleepingPercentage 50 to let half of them skip it.
Force-loaded chunks follow their team, not the server. The pack leaves FTB Chunks on its default mode and has no permissions mod, so a team's force-loaded chunks load with its first member and unload when the last one logs off. To keep force-loaded farms running while their owners are offline, set force_load_mode to always in the world's serverconfig/ftbchunks-world.snbt. Hostile mobs do not spawn on the surface; they wait underground and in the Skull Cavern, a cave dimension that resets every day, and anyone still down there around 5:50am faints.
Society: Sunlit Valley server not working: common fixes
A Society: Sunlit Valley server that is not working usually shows one of these 6 signs:
| What you see | Why | Fix |
|---|---|---|
| The game crashes when a player opens the quest book | Their pack version differs from the server's, or one side has mods the other lacks | Match the version and the mods; look for the green checkmark in the server list |
| KubeJS errors after an update | Something went wrong while updating the pack | Replace the 5 folders as in the update steps below |
| Invalid player data when the world loads | The Species mod is missing; some authors block downloads outside the CurseForge app | Add Species to the mods folder |
| Shops sell the wrong items, or crops do not grow in their season | The player's sub-season length differs from the server's | Set the server's number in the player's seasons.toml |
| RAM use far above the table on this page | WorldEdit is installed | Remove it; the guide reports Axiom working instead |
| A corrupted world | Essential, a mod the pack does not support | Remove Essential from the server and from every player's game |
For lag that none of these explain, the pack includes spark: type spark profiler start in the console, stop it a few minutes later with spark profiler stop and read the report it links. Our guide to Minecraft server lag explains what the report shows.
How to update a Society: Sunlit Valley server
To update a Society: Sunlit Valley server, follow the pack's FAQ in this order: turn the server off, back up the world and download the backup, upload the new server pack zip, delete the 5 folders config, defaultconfigs, kubejs, mods and patchouli_books, then extract the zip. The FAQ gives exactly these steps as the answer to KubeJS errors after an update, so do not skip the delete.
Your own changes to _config.js and seasons.toml sit in folders the update replaces, so note them down first and set them again afterwards. The FTB Chunks file in the world's serverconfig folder stays. Releases come often: 4.1.0, called Cozy Cafe, arrived on 24 July 2026, 4.1.1 to 4.1.5 followed in July, August and September, and 4.1.5A on 26 September. Our Minecraft server backup guide shows how to get a world back if an update goes wrong.
Society: Sunlit Cobblemon server: what changes
A Society: Sunlit Cobblemon server runs a separate pack, not an add-on: the same maker's spinoff, where Cobblemon helps with the farming, has its own version, 1.1.4-SSV4.1.5A from 26 September 2026, built on Sunlit Valley 4.1.5A. For a server, the 2 packs compare like this:
| Sunlit Valley | Sunlit Cobblemon | |
|---|---|---|
| Version on 10 October 2026 | 4.1.5A on CurseForge, 4.1.5B on Modrinth | 1.1.4-SSV4.1.5A |
| Minecraft and loader | 1.20.1, Forge 47.4.0 | 1.20.1, Forge 47.4.0 |
| Mods in the Modrinth file | 324 | 346 |
| Pokémon | None | Cobblemon through Sunlit Cobblebackported, with Radical Cobblemon Trainers and Cobbreeding |
| Downloads on CurseForge | 1.44 million | About 180,000 |
Both count as large packs in our rule, so the RAM numbers on this page hold for either. For Cobblemon on its own, without the farming game around it, see Cobblemon server hosting.
Best Society: Sunlit Valley server hosting plans
The best Society: Sunlit Valley server hosting for ten players is a 24 GB plan, since ten farmers need about 18 GB and a 16 GB plan falls short.
For 6 to 10 players with a large modpack on Java in Poland (Warsaw), the finder recommends Astroworld Hosting Premium Performance: 24 GB, AMD Ryzen 9 7950X, DDR5, for €46.95 a month when you pay monthly. As a new customer you pay €18.78 a month for the first 3 months, 60% off. The best plans at the other two hosts are Lodehost Premium at €46.95 and CheapestMinecraftHosting Crew at €19.20.
| If you want | Host and plan | Memory | Processor | Location | Per month |
|---|---|---|---|---|---|
| Lowest price | CheapestMinecraftHosting Crew | 24 GB | AMD Ryzen 9 7950X, DDR5 | Poland (Warsaw) | €19.20 |
| Balanced | Astroworld Premium Performance | 24 GB | AMD Ryzen 9 7950X, DDR5 | Poland (Warsaw) | €46.95 (€41.95 on 24 mo) New customers: €18.78 a month for the first 3 months, 60% off |
| More performance | Astroworld Premium Performance | 24 GB | AMD Ryzen 9 7950X, DDR5 | Poland (Warsaw) | €46.95 (€41.95 on 24 mo) New customers: €18.78 a month for the first 3 months, 60% off |
Astroworld Premium Performance and Lodehost Premium put 24 GB on reserved Ryzen 9 threads for €46.95 and €46.95 a month. CheapestMinecraftHosting Crew has the same 24 GB on a shared Ryzen 9 7950X for €19.20. A group of up to five fits in 16 GB, such as CheapestMinecraftHosting Pro for €12.80 or Astroworld Advanced Performance for €40.95.