After the game has loaded. The lower lefthand corner is where most of the controls are. Pick the picture you want to work with and then click on the puzzle piece in the lower righthand corner. Next will come up selections in the lower lefthand corner to select number of pieces and piece size. Click triangular play button to move to the next step. The next step you pick the shadowing. Then you can select randomizing options like jag, shape and rotation. Click the play button and the finished puzzle will be shown. To start, just click on the puzzle and off you go. You can change to full screen anytime by mousing over the lower lefthand corner.