How to Play

Tetra Block is played on a 9 x 9 grid, similar to Sudoku! You can drag & drop blocks onto the grid to create rows, columns, and squares. Whenever you complete one of these shapes, you will clear their blocks from the board and earn points!

General Gameplay

Clearing a Row

To clear a Row, make sure you have blocks lined up horizontally on the game board. When placing the final piece in the row, the blocks will be cleared & removed from the board. You will gain points for the cleared Row.

Clearing a Column

To clear a Column, make sure you have blocks lined up vertically on the game board. When you place the final piece to complete the column, the blocks will clear and be removed from the board. You will gain points for the cleared Column.

Clearing a Square

You will notice that the game board looks similar to a Sudoku board, with nine (9) Square areas, each made up of a 3x3 section of the game board. When you fill one of these 3x3 Squares with blocks, you will clear all the blocks in the filled Square. This removes the blocks from the board, and you will gain points for the cleared Square.

Collecting an Objective

In “Play” mode, Objective blocks can appear on the game board or in Block Tray, below the board. Each level will display a specified number of Objective blocks needed to collect. You must collect the specified number of Objective blocks to complete the level.


To collect an Objective block, create a row, column, or square that contains an Objective tile.

Objective blocks can be layered. The number indicated on the Objective block will tell you how many layers it has. For example, the number 3 can appear on an Objective block. That means, the Objective block can be collected 3 times. The number will count down each time you collect an Objective block until the layered Block is removed from the board.

Running Out of Room

You can’t place a block on the board if there is no spot that it can fit. If none of your blocks have a spot that they can fit, you are Out of Room and the game will end. However, you also get one chance to use a Continue each game after you run Out of Room.

The Continue ability will give you a new set of blocks and clear out blocks from the middle of the game board.