How to Host a Vampirism.co Server (NeoForge 1.21.1)
Vampirism.co is a vampire-themed RPG pack on NeoForge 1.21.1 built around the Vampirism mod: players choose to be a vampire or a vampire hunter, each with its own progression tree of powers and abilities. Getting both factions running smoothly takes a bit more care on the server side than a plain survival world — here's how to set it up without losing anyone's progress.
Start with a 6 GB RAM floor. Vampirism.co runs on NeoForge 1.21.1 and layers a full faction-progression system (vampire powers and sunlight tracking on one side, hunter rituals and silver-weapon crafting on the other) on top of normal world simulation, and that's the recommended minimum to keep both trees ticking without stutter.
Import the modpack directly instead of guessing from a client export. Pick Vampirism.co from CoalHost's modpack list and let the panel pull the matching NeoForge 1.21.1 server files and mod list automatically, so you're not hand-copying a client's mods folder and hoping nothing client-only snuck in.
Watch the console through first boot. Let NeoForge finish loading before anyone connects, and confirm Vampirism's faction and skill-tree systems initialize cleanly — a world that boots clean on this pack means both the vampire and hunter progression trees are registered and ready.
Only invite players once that first clean startup is confirmed. Letting people in during a loader crash or a half-initialized faction system is how you end up with a hunter who can't pick up silver gear or a vampire stuck without blood mechanics.
Back up before any world import, loader update, or config change. A vampire or hunter who has sunk hours into their progression tree has no fast way to recover levels and unlocks if a bad update corrupts the save — a fresh backup is the only safety net.
Use a cleaner Vampirism.co path
CoalHost is built around modpack hosting, which makes Vampirism.co much less annoying to launch correctly.
Deploy Vampirism.co now →