How to Host an Official Tensura: Reincarnated Survival Server

Start with at least 8 GB of RAM allocated to the server. That's the catalog's recommended floor for Official Tensura: Reincarnated Survival Server on NeoForge 1.21.1 — the skill and race systems ManasMods built into the pack add real memory overhead on top of vanilla Minecraft, and running below that floor is the fastest way to see garbage-collection stutter during combat or evolution events.

Import the modpack through a proper modpack installer rather than copying files out of a client instance. Official Tensura: Reincarnated Survival Server ships as a NeoForge 1.21.1 pack with a specific mod and config set from ManasMods, and a clean server-side import avoids client-only mods or mismatched configs that a manual copy-paste from a launcher profile tends to introduce.

Watch the console through the first full boot instead of walking away. Because this is the official ManasMods build, its skill and race registries need to finish loading before the world is stable — look for the loader to report a clean 'Done' with no repeating errors tied to Tensura's skill, race, or evolution systems before you consider the server ready.

Only open the server to players after you've confirmed a clean startup end to end. Tensura's race selection and skill progression get written into player data from the first login, so starting players on a server that crashed partway through its first boot risks corrupting that progression before anyone has really started playing.

Set up automatic backups before you touch anything else — world imports, loader updates, or config changes. A failed update on this pack doesn't just risk the world, it risks every player's accumulated Tensura race and skill progression, and that's not something you want to discover you lost after the fact.