Simply bear traps

Traps are placed on the ground and snap shut when a player or mob steps on them. A triggered trap deals damage and holds the target for a short time, so it cannot walk away until it is released. Traps are modeled as animated 3D models powered by GeckoLib, which is required and must be installed alongside the mod. Arrows and dropped items can also set a trap off, and the trap keeps its properties when it is picked up and placed again.

Four trap materials are available: Iron, Gold, Diamond and Netherite. Each material sets its own damage, trapping duration and reset speed, and the exact values can be changed through the configuration file. Trapped players struggle to escape faster, and every struggle deals extra damage, though other players can help free them. A dedicated tool releases trapped targets, and the trap rearms itself automatically once it is cleared.

The mod is aimed at dungeons, adventure maps, multiplayer servers and modpacks, and it is meant to stay simple enough for ordinary survival play. Traps can be dyed, and colors mix to give a much wider range than the standard Minecraft dye palette, so traps can blend into grass, caves, deserts or dungeon stone. Trap and mob triggering can be configured, and the mod is released under the MIT License but is not open source. It runs on client and server, so the server and every player need it, and the Forge build targets 1.20.1 only.