The castle indicator on the right side of the screen shows you how many lives you have left.

In earlier rounds, where there are no flying Plankton, you can focus on defeating a ground attack by building across the bottom.

Be sure to build high as well as wide to defeat them.

As the levels increase, the waves of Plankton will not only mount a ground attack, they will fly at you, too.

The indicator on the top right will show you the next shape that will fall.

You will find it difficult or impossible to build a solid low level defense & to maneuver pieces to make 2 by 2 squares which give you extra build time.

Don’t let your wall get too high, too early.

Stronger materials add far more time to your remaining build time.

The 2 by 2 grid must use the same type of building material in all 4 squares.

You can extend your build time limit by creating a four block shape of the same type in a 2 by 2 grid.

This will buy you more bricks within your time limit. Once you have them aligned, force them down into place with the down arrow. Build the biggest wall you can in the time available.

It’s unlikely you’ll have time to build a complete wall.

It is ok to leave gaps provided your reason for doing so is it helps you build a 2 by 2 shape of the same building material.

Spin the falling shapes to fit them together.

Ideally, you want to form a solid wall with no gaps.

The speaker button toggles the sound off and on.

The play button returns you to the game.

The pause button at the top right of the screen gives access to the game control menu.

The down arrow quickly drops the blocks.

Left and right arrows move the blocks left or right.

Use the direction arrow keys and space bar to control and organize the falling blocks into an impregnable wall.

Click on the mouse button to advance the screens.

An animation will explain the game concept and show the instructions.

Click anywhere on the screen to start the game.

Lay blocks to build a wall to prevent the waves of Plankton getting to Spongebob.

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