Best Core Keeper Mods for 2026

Core Keeper hit its 1.0 release in 2024 and has kept building out its modding scene since — the community mostly loads mods through BepInEx and distributes them via Thunderstore, and Core Keeper also picked up an official mod.io integration and a Steam Workshop beta (started October 2025) for easier in-client installation. None of the mods below are invented — they're the ones that consistently show up across Core Keeper mod guides and Thunderstore's most-downloaded lists.

How Core Keeper modding actually works

Most Core Keeper mods are loaded through BepInEx, a general-purpose Unity mod loader. For a dedicated server, that means:

1. Install BepInEx on the same files your dedicated server runs from.
2. Drop the mod's DLL into the BepInEx/plugins folder.
3. Every connecting client needs the same mod installed to stay in sync — server-side-only mods are the exception, not the rule, in Core Keeper.

A dedicated server (rather than a friend hosting from their own game client) makes this much easier to manage, since the mod files live in one place instead of needing to match across everyone's individual installs.

The mods worth installing

• Enemy Health Bar — adds visible health bars to enemies, other players and your tamed creatures, which turns Core Keeper's combat from guesswork into something you can actually read and react to.
• Auto Fish — automatically reels in the line once a fish bites, removing the twitch-timing minigame for a purely relaxing fishing loop.
• Auto Door — doors open automatically as you approach and close behind you, a small change that removes a surprising amount of friction in base navigation.
• Infinite Ore Boulder — spawns ore boulders that can't be fully destroyed, so a mining base can keep producing a specific ore indefinitely instead of you having to re-explore for more veins.
• Grid/line placement enhancement — lets you place seeds, walls, floors and other tiles in straight lines or grids instead of one tile at a time, which matters a lot once you're building a real farm.
• Portal Charge Timer removal — lets you use your portal network immediately instead of waiting out its cooldown, useful once your base spans multiple biomes.
• Bucket mods — add the ability to carry and transfer liquids (like lava or water) in a bucket, a quality-of-life gap the base game leaves open.

Where these mods actually live

Thunderstore remains the primary distribution point for Core Keeper's BepInEx mods, and it's organized much like Valheim's or Lethal Company's Thunderstore communities — sortable by most-downloaded, with version history and per-mod compatibility notes from authors. The newer mod.io integration and Steam Workshop beta (launched October 2025) are aimed at simplifying in-client installation for players who don't want to touch BepInEx directly, but the mods themselves — and the community guides ranking them — still largely originate from the Thunderstore ecosystem, so it's worth checking there even if you end up installing through a newer front-end.

Building a modded server the right way

• Agree on a mod list before anyone joins. Since clients and server need matching mods, decide your list up front rather than adding mods mid-playthrough.
• Update mods and the base game together. A Core Keeper content patch can break BepInEx mods until their authors update — check Thunderstore for a compatibility note before updating a live server.
• Keep it light if you're modding for co-op with new players. Most of the mods above are quality-of-life, not overhauls — a good default for a group where not everyone wants a heavily changed game.
• Test a new mod before pushing it live. Add one mod at a time on a scratch world if you can, rather than installing a whole list at once — it makes it far easier to identify which specific mod caused a crash or a save-corruption issue if something goes wrong.

Sizing your server

Core Keeper is one of the lighter titles in this list to host — a 2D top-down sandbox with modest resource needs even with a full party:

• 2 GB RAM / 6 players — vanilla or lightly modded, small group.
• 4 GB RAM / 8 players — our most-picked tier, comfortable with the mods above installed.
• 6 GB RAM / 8 players — extra headroom for a heavily modded world with a full party.

Why Core Keeper is a good first modded server

Core Keeper's small map focus and modest base resource needs make it one of the more approachable games in this list to run modded — even the full 6 GB tier with a heavy mod list installed stays cheap and light compared to modding a heavier 3D survival game, so it's a reasonable place to try running a modded dedicated server for the first time if you haven't before.

Ready to run a modded Core Keeper world with friends? Nxeon's Core Keeper server hosting gives you full file access over SFTP to drop BepInEx and your mod list straight onto the server, on NVMe-backed VPS instances sized for exactly the tiers above.