Core gameplay
Blocks have irregular shapes: L, T, S, Z, and line shapes. Your goal is to fit shapes together without gaps. Complete rows clear regardless of shape fragments above.

Level and content structure
Seventy stages. Early stages use only L and line shapes. Later stages add T, S, and Z shapes. No shape rotation lock delays.

Visual and user experience
Shapes are solid colours with black outlines. The well background uses alternating row shading to show alignment. Rotation happens instantly on key press.

Features
A shape library shows all possible pieces on the side. Hold function stores one piece for later.

User value
Traditional tetromino shapes offer familiar mechanics to experienced puzzle users. Suitable for users transitioning from other block games.

Usage scenario
Short bus or tram journeys.