How to Host a Biohazard: Project Genesis Server

Start from a 10 GB RAM floor, not a guess. Biohazard: Project Genesis bills itself as the ultimate apocalypse pack — a full zombie-apocalypse RPG with a broken open world, horde combat, scavenging, and base-building layered on Forge 1.20.1 — and that scope needs headroom before you add any players. 10 GB is the pack's own recommended starting point, not a third-party estimate.

Import the modpack directly from its file instead of rebuilding the mod list by hand. Uploading your own client export almost always drifts from the server-side mod set over time — use a host that takes the pack file itself so the server matches exactly what the pack author shipped, recipes included.

Watch the console through a full boot before you touch anything else. Because this pack's recipes are verified and its world generation and horde systems are heavy, a bad boot usually shows up as a recipe conflict or a world-gen stall rather than a hard crash — let the server reach a steady, idle tick rate with no repeating errors before moving on.

Only invite players after that first clean startup. A broken world still exploring hordes and scavenging loops is already punishing enough without a server that's still stabilizing underneath the first people who log in.

Back up before importing a world, updating Forge, or touching configs. A rollback here means losing a scavenged base, crafting progress built on the pack's own verified recipes, and whatever ground was cleared of the infected — take a backup before any change that could undo that.