Stealth Mechanic
Stealth Mechanic is a Forge server mod that makes hostile mobs react to the sounds a player makes, so movement choices matter in survival play.
What it does
Hostile mobs in vanilla react to line of sight and to sounds made by the player. This mod changes how that hearing works. Walking, sprinting, jumping and landing each produce noise, and the amount depends on the block underneath. Footsteps on sand or gravel carry further, whereas wool, carpet, moss and snow muffle them. Armor and held items also raise the noise a player makes.
Sneaking lowers the noise and reduces the chance of being detected. Rain, darkness and invisibility lower the chance of being noticed, and walls or obstacles reduce how well mobs hear the player, so careful routes can break off an enemy pursuit. Passive mobs are left unchanged.
Stealth Mechanic is installed on a Forge server for 1.21.11. It is server-side only, so players join without installing anything. The mod is released under the CC0 1.0 Universal license and is not open source.
Key features
Footstep noise by action
Walking, sprinting, jumping and landing each generate a different amount of noise for nearby hostile mobs.
Surface-based loudness
The block under the player sets the noise level, so sand and gravel carry sound while wool and moss muffle it.
Sneaking and gear
Sneaking lowers detection, while worn armor and held items make the player easier to hear.
Walls and weather
Solid obstacles reduce how far mobs hear, and rain, darkness or invisibility lower the chance of being noticed.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Survival pacing
Players who want zombies and other hostile mobs to pose a quieter, more tactical threat can rely on sneaking and terrain choice.
Who it’s for: Server owners who want hostile mobs to respond to player noise, and survival players who prefer stealth over direct combat. Passive mobs keep their vanilla behavior.
How it compares
Zombie Have Ears and Zombie Have Eyes both target Forge and NeoForge for 1.20.1 – 1.21.1 and are server-side only, but they are not open source. World Mob Vision is server-side only for 1.12.2 and not open source. Stealth Mechanic works on Forge for 1.21.11 only.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Stealth Mechanic | Forge | 1.21.11 | Server-side only | 2026-06-18 |
| Zombie Have Ears | Forge and NeoForge | 1.20.1 – 1.21.1 | Server-side only | 2026-07-27 |
| Zombie Have Eyes | Forge and NeoForge | 1.20.1 – 1.21.1 | Server-side only | 2026-08-02 |
| World Mob Vision | Forge | 1.12.2 | Server-side only | 2026-03-31 |
Questions
Does Stealth Mechanic need to be installed on clients?
Which loader does Stealth Mechanic support?
Are passive mobs affected by the noise system?
In the catalog
Stealth Mechanic is one of 11,058 Mobs mods on ModsFinder, and one of 6,527 Mobs mods for Forge. 19,862 mods support Minecraft 1.21.11.
Similar mods
What the author says
Stealth Mechanic — это Forge-мод, который добавляет в Minecraft механику скрытности, шума и реакции враждебных мобов на действия игрока. Крадущийся режим на Shift снижает шум и помогает скрыться от врагов. Дождь, темнота и невидимость также уменьшают шанс обнаружения. Если между игроком и мобом есть стена, звук…
Official listing
- Modrinth page
- modrinth.com/mod/stealth-mechanic
- Owner
- fendistandoff8
- Published
- 2026-06-18
- Updated on Modrinth
- 2026-06-18
- Facts verified
- 2026-10-15