Real-Time Corruption Simulator

Corruption is driven by a seed. The same seed produces the same results, and it can be edited and shared with other players. Changes reach the controls, the way the player moves around the world, the look of the world and its textures, which sounds are picked and when they play, menus and on-screen interfaces, entity timing and events, and how items and block actions behave. Visual imitations of corruption are included as well.

The simulator is operated from a panel inside the game and can run synchronized corruption across a multiplayer server. Server operators control the change settings. When the Client Drift option is off, players on a server usually see identical outcomes. Turning Client Drift on breaks that determinism and gives each player individualized corruption targets. Achievements with progress tracking, a pinned HUD display and qualification rules are included, and qualification is stored and checked on the server.

The mod is published for Forge only, for 1.20.1, with version 0.1.1 as the latest file, first released on 2026-07-15 and last updated on 2026-07-20. It runs on the client and the server, so both need it. It is released under the MIT License and is open source; the source code and issue tracker are public.