How to Install and Play Seaopolis on a Minecraft Server

Seaopolis Server Guide

Vanilla Minecraft gives players plenty of freedom, but its main progression path is fairly simple once the Ender Dragon is defeated. Modpacks solve that problem by rebuilding the game around new systems, recipes, mobs, structures, and goals. Seaopolis is one of those packs, turning Minecraft into a mostly underwater survival challenge with quests, custom resources, ocean exploration, and a steady climb in difficulty.

Seaopolis works especially well on a multiplayer server because the quest book gives everyone shared objectives without forcing a single playstyle. Some players can focus on crafting chains, others can explore wrecks and ruins, and someone will inevitably spend too long organizing chests. That still counts as progress, technically.

This guide explains how to install Seaopolis on your computer and on a HolyHosting Minecraft server, then covers the basics of surviving your first hours in the pack.

What Is Seaopolis?

Seaopolis was created by benbenlaw and released on CurseForge for Minecraft Forge 1.16.5. It includes more than 180 mods and centers on survival inside an ocean world. Instead of starting in a normal biome with villages and caves nearby, players begin in a protected glass sphere with very limited resources.

The pack uses quests to teach progression, reward useful items, and introduce its economy. Exploration is still important, but early progress depends heavily on following objectives, crafting the right materials, and learning which items can be transformed in water.

Install Seaopolis on Your Computer

Before joining a Seaopolis server, every player needs the matching modpack installed locally. CurseForge is the simplest way to handle the required files.

1. Open CurseForge and download the launcher for your operating system.

1. Run the downloaded installer and finish the setup process.

1. Open the launcher, then select Browse Modpacks from the Minecraft section.

1. Search for Seaopolis, then choose Install on the modpack page.

1. Wait for the files to finish downloading. After that, open My Modpacks and press Play on Seaopolis.

Once Minecraft launches from this profile, it should include the correct Forge version and all required mods.

Install Seaopolis on the Server

Seaopolis can be selected from the server software or game file options in the HolyHosting control panel. Using a fresh world is important because the pack needs its custom ocean-based generation.

1. Open your HolyHosting server panel and find the Game File or server type selector.

1. Click the current selection to open the available options.

1. Search for Seaopolis, then select it from the list.

1. Confirm the version change when prompted. Choose to create a new world, then restart the server.

1. After the server finishes starting, join it from the Seaopolis profile in CurseForge.

If the server was previously running another modpack or a vanilla world, creating a new world avoids broken terrain, missing quests, or a spawn that makes no sense for this pack.

First Steps After Joining

Seaopolis begins inside a glass dome with a single tree. That tree is your first lifeline, so avoid wasting logs or saplings early. Outside the dome, the world is ocean, and the air becomes toxic once you move more than a couple of blocks above the safe area. In other words, this is not the best time to build a cheerful dirt tower.

Open your inventory and look for the quest button in the upper-left area. The quest menu explains early goals, unlocks new tasks, and gives rewards that keep progression moving. You also start with helpful items such as Materials & You, which explains tool and material options, and The One Probe, which controls tooltip information for blocks and entities. Pressing J opens the map.

Follow the Quest Book

The quest menu is more than a checklist. It is the main guide for Seaopolis progression. The tutorial entries explain how certain quest types work, including kill quests that require melee damage, chapter challenges, special rewards, and Sea Bucks, the pack's shop currency.

After reading the tutorial entries, move into the Starting Up category. This section gives the first practical objectives and shows which items are needed next. If you feel stuck, check this category before guessing recipes.

Build Your First Supplies

Your first job is to harvest the tree inside the dome. Collect logs, saplings, sticks, apples, and planks, then start crafting the items requested by the early quests. A crafting table opens more objectives, and basic tools quickly become necessary for gathering additional resources.

Keep replanting saplings so the base does not run out of wood. Some early tasks repeat the same resource loop, but the rewards gradually open better options. Pay close attention to quest descriptions, because Seaopolis sometimes asks you to drop items into water so they transform into different materials. That one detail saves a lot of confused staring at recipe screens.

Spend Sea Bucks Carefully

Sea Bucks appear as quest rewards and can be spent in the Sea Shop, found near the bottom of the quest category list. The shop offers cosmetic items, building blocks, and technical materials that can speed up progression.

It is tempting to spend currency immediately, but saving some Sea Bucks for later is usually smarter. Early quests already provide many basics, while later recipes may need items that are harder to obtain through normal crafting or exploration.

Explore Shipwrecks

Once the base is stable, ocean exploration becomes a major source of resources. Shipwrecks are among the most common structures and usually sit on the ocean floor. Before diving down, prepare Water Bowls or another way to gain water breathing. The effect from Water Bowls lasts only 25 seconds, so bring more than one unless you enjoy panic-swimming.

Shipwreck Loot

Shipwreck chests vary a lot. Some contain iron ingots, supplies, or other valuable materials, while others may only hold maps or lighter loot. Seaopolis changes the normal buried treasure flow, so the wreck itself is often the main reward instead of a map leading somewhere else.

Find Other Structures

Shipwrecks are not the only places worth checking. Seaopolis includes surface towers, floating islands, glass domes, ocean monuments, and underground dungeon-style areas. Some structures contain excellent loot, while others are more useful as landmarks or future bases.

Because the world can look empty at first glance, it helps to mark discoveries on the map. A structure that is too dangerous early may become useful once you have armor, better tools, or more reliable breathing options.

Watch for Hostile Mobs

The ocean is not peaceful just because it is blue. Hostile mobs can appear underwater and on the surface, including guardians, pillagers, standard enemies, and pirate-style skeletons carrying TNT. Avoid unnecessary fights until you have decent equipment, since armor and stronger weapons tend to arrive later in progression.

Quest lines may eventually send you toward tougher enemies or boss encounters. Treat those as preparation checks. If a fight feels impossible, return to crafting, shop rewards, and exploration before trying again.

Troubleshooting Seaopolis

If Seaopolis does not load on the server, confirm that the modpack is selected in the game file area, a new world was generated, and the server was restarted after the change. For cleaner installs, use a separate server profile or directory when switching modpacks so old files do not interfere.

If the server starts but the world is not an ocean map, generate a new world again after selecting Seaopolis. You can also upload a working singleplayer Seaopolis world if you already have one prepared.

If players cannot join because of missing mods, make sure they are launching Minecraft from the CurseForge Seaopolis profile rather than a normal vanilla or Forge profile. The client and server should also use the same modpack version. When in doubt, update or reinstall Seaopolis on both sides.

For client crashes or slow loading, increase the memory allocated to Minecraft in CurseForge. Modpacks with more than 180 mods need more RAM than a standard vanilla installation.

Useful Links

• Seaopolis on CurseForge
• How to install modpacks on Minecraft servers
• Installing modpacks with CurseForge
• Becoming a server operator in Minecraft