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How to Host a Vault Hunters Server With Friends — Setup & RAM Guide
Vault Hunters turns Minecraft into a roguelike-RPG grind built around instanced 'vaults', and it's at its best in co-op. It's a large Forge pack whose vault dimensions generate fresh terrain constantly, so memory and a well-pre-generated overworld both matter.
How much RAM does Vault Hunters need?
Each vault is a freshly-generated instance, so the server is doing real work every run. Give it room to breathe, especially when several players run vaults at the same time.
| Players | Recommended server RAM | Notes |
|---|---|---|
| 1–3 | 8 GB | Fine for solo or a small co-op crew. |
| 4–6 | 10–12 GB | Best balance for most groups. |
| 7–10 | 14–16 GB | Multiple simultaneous vault runs add load. |
| 10+ | 16 GB+ | Stagger vault runs to keep ticks healthy. |
Setup steps
- Pick a plan with 10–12 GB RAM for a typical co-op group.
- Install 'Vault Hunters 3rd Edition' from the installer or paste the pack.
- MineXEngine detects the Forge version and matching Java automatically.
- Pre-generate the overworld a few thousand blocks out so vault entry and travel don't stutter.
- Set your whitelist and start — Vault Hunters is best with a fixed crew.
Common Vault Hunters problems
- Tick lag during group vault runs — stagger entries or bump RAM.
- Long world-gen pauses — pre-generate chunks; don't explore into fresh terrain mid-vault.
- Version drift — keep server and client on the exact same Vault Hunters build; updates change vault mechanics.
- Out-of-memory under-allocation — vault instances stack up; don't run a busy group on 6 GB.
MineXHost runs Vault Hunters on MineXEngine — our launcher auto-detects the modpack, picks the right Minecraft loader and Java version, tunes the JVM for your RAM, and auto-recovers from the crashes that normally end a modded server's evening. Pick your RAM, paste the pack, and play.
See hosting plansFrequently asked questions
How much RAM does a Vault Hunters server need?
8 GB for 1–3 players, 10–12 GB for 4–6, and 14–16 GB+ for 7 or more. Concurrent vault runs are the heaviest moments — size for those.
Why does Vault Hunters lag when everyone enters a vault at once?
Each vault is a freshly generated instance, so simultaneous entries create a burst of world-gen and entity load. Stagger entries or add RAM.