Blackbox is a little logic game. The game board is an 8x8 grid of black boxes surrounded by 32 ray lights ready to fire.

To fire a ray light click on it. The ray will travel in a straight line. If there are no atoms hidden in the straight-line path, you should see the ray light hit the wall directly opposite.

Your goal is to find the four atoms hidden within the blackbox. Each atom affects the ray differently, so you have to watch closely when you fire the ray to see where it ends up.

The yellow atom sends the ray directly back in the direction it came from. If you fire a ray and it comes back into the ray you fired it from, you can be certain that it hit a yellow atom somewhere along the way.

The red atom sends the ray to the right. If you fire a ray and it hits the wall along the axis to the right of your shot, it's fairly certain that at the point where the row of your shot and the column on the wall intersect the red atom is there.

The blue atom sends the ray to the left. If you fire a ray and it hits the wall along the axis to the left of your shot, it's fairly certain that at the point where the row of your shot and the column on the wall intersect the blue atom is there.

The cyan atom stops the ray dead. If you fire a ray and it does not hit a wall, you can be certain that it hit the cyan atom somewhere along the way and was absorbed.

If you suspect that you know where an atom is, click on its icon to the right of the game board and then click in the blackbox grid to place it. Once all four atoms are placed, click the button labelled Check If Atoms Are Correct to see if you succeeded. If you placed the atoms correctly you will be taken to a winning banner, click to go back, check your score, and click to play another game

You can use the Red X tool to signify that a square is open and free of atoms.