SeeU Extra

SeeU Extra renders configured non-player entities beyond vanilla tracking distance through SeeU. It supports Fabric and NeoForge modded servers. Paper remains player-only.

Install matching SeeU and SeeU Extra builds on the server and every client. SeeU Extra 0.1.1 and later require SeeU 0.9.1 or later in the 0.x line. Client and server builds of SeeU Extra must use the same version.

Configuration

The server creates config/seeu-extra-server.json. Its default mode is DISABLED, so the addon does not scan entities until an administrator enables it.

• SELECTED accepts entity IDs from types and mod or registry namespaces from namespaces.
• ALL accepts every eligible loaded non-player entity.
• excludedTypes and excludedNamespaces take precedence in both modes.
• maximumDistanceBlocks, minimumDistanceBlocks, entityCap, and updateIntervalTicks limit server work and traffic.

{
  "configVersion": 1,
  "mode": "SELECTED",
  "types": ["minecraft:zombie"],
  "namespaces": ["iceandfire"],
  "excludedTypes": [],
  "excludedNamespaces": [],
  "maximumDistanceBlocks": 8192,
  "minimumDistanceBlocks": 0,
  "entityCap": 128,
  "updateIntervalTicks": 4
}

The client creates config/seeu-extra-client.json with its enable switch and distance limits. The server uses the lower maximum distance and the higher minimum distance from the two configurations. Restart the client or server after editing either file.

The handoff from vanilla rendering follows the player's active Render Distance and Entity Distance settings. Sodium and Reese's Sodium Options use the same Minecraft settings, so changes made through their video screens are applied automatically without reconnecting.

Limits

• The addon reads loaded entities and never loads chunks.
• Players and entities carrying a player stay on SeeU's player path.
• Each client needs the mod that registers every selected entity type.
• Position, rotation, velocity, pose, flags, and equipment are synchronized. Renderers that require custom tracked data can still differ from the server entity.

Supported versions

Branch	Minecraft	Java	Loaders
main	26.2	25	Fabric, NeoForge
multiloader-26.1.2	26.1.2	25	Fabric, NeoForge
multiloader-1.21.11	1.21.11	21	Fabric, NeoForge
multiloader-1.21.1	1.21.1	21	Fabric, NeoForge