Core gameplay
Blocks fall in groups of three arranged vertically. You may rotate the group before it lands. A row clears when it contains blocks from any group without gaps. The game ends when the highest block touches the top boundary.

Level and content structure
Seventy levels. Levels 1–20: constant falling speed. Levels 21–50: speed increases every ten rows. Levels 51–70: the well narrows from ten to eight columns.

Visual and user experience
Each block tier has a slightly different shade. A drop shadow shows the landing position. All animations complete within half a second.

Features
A ghost piece shows where the current block will land. Next three blocks are visible. No online connectivity required.

User value
The ghost feature reduces placement uncertainty. Helps new players learn falling trajectories without trial and error.

Usage scenario
Brief breaks during study sessions.