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the physics

make a mod that adds physics to minecraft and weight to blocks and when you balance block each one can be heavier or lighter

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fabricServer1.21.1mod

the physics (server-only)

  • Adds server-side block weight and a simple stability pass so heavy stacks collapse into falling blocks when their supports are too weak or missing.
  • Uses material-aware weights (e.g., obsidian/netherite blocks are much heavier than wood or leaves) and recalculates columns when players place or break blocks nearby and periodically around players.
  • Unsupported or overloaded blocks convert into falling block entities; blocks with block entities are broken and dropped instead of attempting to fall.
  • Works automatically with normal building and breaking—no commands or configuration needed; lighter materials are safer for tall or fragile builds while dense blocks demand sturdy supports.
  • Limitations: focuses on vertical balance only, checks run in loaded chunks near player activity, and visuals remain vanilla (no extra client assets or particles).