Hold Piece — Drag any piece to the hold slot to save it for later. Swap it out anytime!
New Challenge Pieces — The game gets harder as you climb: Plus and W-staircase shapes at 5K, tricky U-shapes at 10K, and massive H-shapes and Big S/Z at 15K.
Rainbow Upgrade — Place the rainbow on the board, then tap any color to clear every block of that color. You choose!