Corrosylva
by CassetuYT
Corrosylva is a Fabric progression mod in which industrial corruption spreads through the world and is gated behind a research tree.
What it does
Research drives the pace of the mod. Right-clicking with an empty main hand opens a research tree menu, and research nodes draw on points that are stored per player as a persistent stat. The current total is viewed in the Innovation Codex. Advancement is controlled through these research systems, which also gate protected structures and tools that carry real risk.
Corrosylva adds Corroded Wood, Corroded Planks and related blocks, along with industrial machinery intended for large-scale use. The corruption spreads: nearby compatible blocks take on polluted or corroded forms, and the spread is visible when randomTickSpeed is raised, with 100 to 400 recommended. Values set high cause performance problems that depend on simulation distance. Players who survive polluted environments can reach the Nether path.
The mod requires Purified Water, and it works alongside integrated industrial corrupted build sets. Corrosylva is built for Fabric on Minecraft 1.21.1 only, with the latest file 1.0.3.1 dated 2026-01-27. The server and every player need the mod installed. The license is custom and the mod is not open source, though the source code and issue tracker are public.
Key features
Research tree menu
A right-click in an empty main hand opens the research tree, where nodes are paid for with points.
Spreading corruption
Compatible blocks nearby turn into polluted or corroded variants, a process tied to randomTickSpeed.
Industrial machinery
Machines for large-scale production become available through research and help players survive polluted environments.
Industrial fire
A fire that cannot be put out with water, so players need other methods to extinguish it.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Research-gated progression
Players work through the research tree to access machinery, structures and tools before reaching the Nether path.
Corruption-themed builds
Corroded Wood and Corroded Planks support builds with polluted industrial sets.
Who it’s for: Players who want a progression-focused survival experience with environmental hazards, and server owners who want to run a research-driven corruption theme on a shared world.
Questions
Does Corrosylva require Purified Water?
Does the server need Corrosylva?
Which Minecraft versions does Corrosylva support?
Can the corruption spread be turned up?
In the catalog
Corrosylva is one of 17,631 Equipment mods on ModsFinder, and one of 8,894 Equipment mods for Fabric. 32,366 mods support Minecraft 1.21.1.
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What the author says
Corrosylva is a progression-focused Minecraft mod centered around industrial corruption, environmental hazards, gated research, and large-scale machinery. Advancement is controlled through research systems, protected structures, and powerful but risky tools. Behavior: - Shards vanish one at a time upon entering…
Official listing
- Modrinth page
- modrinth.com/mod/corrosylva
- Owner
- CassetuYT
- Published
- 2025-12-17
- Updated on Modrinth
- 2026-01-27
- Facts verified
- 2026-10-15