⌨ Keyboard
1–3 select · arrows move · R rotate · Enter place
How to Play GridSmash
Build a clean board one placement at a time. GridSmash gives you three pieces for a 10 by 10 board. Drag a piece from the tray and release it over empty cells. A short tap on a tray piece rotates it; desktop players can also right-click while dragging. Complete all three pieces to receive a fresh set. Green outlines preview the ordinary rows and columns your placement would complete, so you can compare a simple clear with a crossing-line combo before committing.
For keyboard play, focus the board and choose a piece with 1, 2, or 3. Move its preview with the arrow keys, rotate with R, and press Enter to place it. Escape cancels the preview. Filled rows and columns clear together. Each placed cell earns 10 points, and completed lines earn points with bonuses for consecutive clearing placements. Leave room for wide pieces and consider rotating before giving up on a tight space.
Special pieces begin appearing from turn 10 outside Zen mode. Placing a crystal clears a nearby 3 by 3 area and adds 200 points immediately. A frost piece creates two frozen cells that need two line-clear hits. The gold wild is a single-cell piece and still needs an empty cell. Every ten turns the bottom two rows become a three-turn Shatter Zone: completing a row there gives triple line points. When the zone expires, three empty cells may fill. Daily uses a shared seeded sequence and a three-minute timer; Sprint asks you to clear 40 lines. Zen removes special pieces and the Shatter Zone.
Frequently Asked Questions
What pieces can appear?
Twenty shapes use one to five cells: dots, lines, corners, squares, and more. Rotate a piece to test different placements.
How do special pieces work?
From turn 10 outside Zen, a crystal clears a nearby 3×3 area as soon as you place it and adds 200 points. Frost creates two frozen cells requiring two line-clear hits. A gold wild is a single-cell piece and must be placed on an empty cell. Specials may change neighboring cells, so the green line preview is shown only for ordinary pieces.
What is the Shatter Zone?
Every ten turns the bottom two rows become a Shatter Zone for three turns. Completing a row in the zone triples its line score. When the zone expires, three empty cells in the zone fill with blocks if space is available.
How is the score calculated?
Placed cells earn 10 points each. Line clears reward simultaneous lines and consecutive clears. Crystals add 200; Shatter Zone rows triple their line points; an empty-board clear adds 5,000.
What modes are available?
Classic lasts while a remaining piece can fit, including rotations. Daily uses a shared three-minute sequence. Sprint aims for 40 lines. Zen removes special pieces and the Shatter Zone.