Rotwire

Rotwire is a NeoForge integration mod that layers a curated urban zombie survival experience over Lost Cities generated terrain. Players explore ruined city structures, search furnished interiors for supplies and intelligence, and clear buildings to keep them persistent. Encounters can include a Rotwire Brute, and the mod has its own firearms and survival equipment. Lost Cities is required, since Rotwire replaces its world-generation system and detects its building metadata and layers to shape encounter behavior. The Lost Cities profile is included with Rotwire.

Settlements are built out of camps and migrant towns. Establishing a radio connection with survivors and keeping an ammunition supply running are part of the early loop. A Radio Transmitter acts as a trader hub offering tasks, quests, farmable resources, guns, ammo and building materials, and town difficulty scales with activity inside them. Survivor NPCs can be armed or unarmed. The environment is client and server: the server and every player need Rotwire, and it runs on NeoForge for Minecraft 1.21.1 only, with the latest file 1.1.6 for 1.21.1 published 2026-08-09. The code is open source under the MIT License.