Crystal Setting

Set four collision crystals worth 4, 8, 16 and 32 in the display. Each tray contains two equal moving gems. The launch marks shift inward on the middle trays, changing whether a brake is needed. Launch one from each end of the rail; every launch, Advance or Brake moves existing gems one square. Gems fuse only when they arrive on the same square during the same beat. Crossing between squares does not count, and a gem reaching the far end sets permanently and loses the tray. Each tray grants one brake: Brake left holds the left-origin gem for that beat while the other moves; Brake right does the opposite. A new tray opens after a successful collision. Watch the two rail positions and spend the brake to synchronize their arrival, not merely bring them near each other. Keyboard: Tab and Enter/Space operate buttons; R restarts.