Drop: Move the cookie lane left and right, then release a cookie into the play area.

Merge: Two cookies of the same size combine into the next larger cookie when they collide.

Plan ahead: Build stable stacks, leave landing space, and keep the center clear for bigger drops.

Lose condition: If the stack rises past the warning line, the jar is full.

Controls: Desktop: mouse + keyboard (arrow keys, Space, R, P). Phone: drag to aim, tap to drop, and use the Restart button.