Double-tap the green flag! Welcome to Lazor, a simulation of... A laser. In this simulation, you create obstacles for a laser, and watch as the laser bounces off of the walls. I never claimed it was a detailed simulation... Controls: Drag the different types of obstacles in the top left to anywhere in the screen to make a copy of them. You can also click space to delete all of the copies of the obstacles. Use the arrow keys to change which direction the laser goes from the starting dot. This will also reset the laser's path. You can also click p to pause the laser, in case you want to build something with the obstacles without having to hurry before the laser gets there. Then, click p again to un-pause the laser.
Semi-Mobile friendly: People on mobile should be able to move and place obstacles. However, they will be unable to change which direction the laser starts shooting from, and also unable to pause the laser. Desktop experience recommended!