The goal of this game is to create as many full horizontal lines as possible by moving and turning different types of falling pieces onto the stack.

Stax resolves around several rules:

You may move pieces left, right and down.
You may turn pieces.
Pieces move down automatically.
A new piece spawns every time the old is placed.
A full horizontal line will be removed.
You gain in levels when you complete lines.
Pieces move down faster as the levels progress.
Points are gained with each piece and horizontal line.
Point rewards increase with each level.