Physics Activator

Interacting with a targeted block converts its connected solid cluster into Falling Block entities, which then drop and collapse under gravity. The search that finds the connected blocks is a breadth-first pass with a built-in cap of 200 blocks per use, so a single action cannot flood the server. Reach follows vanilla limits, 4.5 blocks in creative and 5.0 blocks in survival, and the mod uses custom mixin optimizations to keep the work light.

A separate advanced ranged weapon fires a linear kinetic beam up to 120 blocks away. At the point of impact it triggers a physics-based collapse over as many as 300 connected blocks, removing roughly 40% of the blocks within the immediate impact radius. Smoke particles mark the removed blocks, electric portal particle trails follow the shot, and a sonic boom with a visual wavefront accompanies each impact. The weapon and its repair route use Netherite Ingots at an anvil, and the specific high-tier items that enable these mechanics are listed in the mod's content.

Physics Activator is classed as a utility mod with magic and technology tags. It is released under the MIT License and is not open source. Files are published for Fabric only, for Minecraft 1.20.1, with version 1.3.1 as the latest build from 2026-06-27. A server running it needs every connecting player to have it too.