Casual Puzzle · Play now

Mass Exchange

Mass Exchange

Trade places with an equal-mass stone, reshape the route and reach the beacon.

Mass Exchange
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HOW TO PLAY

How to play Mass Exchange

Three original chambers: a mass-one traveler may swap with mass-one stones, mass-two anchors stay fixed, and walking or swapping changes the path to the exit.

Controls

  • Arrows or WASD: move; Q: select; E: swap; R: restart.
  • Use the native touch controls and stone buttons.

Tips

  1. Anchors cannot be exchanged.
  2. Your old position keeps the swapped stone.