You can test your Zook at any time by choosing the Test option. 

When in test mode, you can change the Environment that your Zook is in and the obstacles it faces, challenge it with time trials and change the angle of the camera view. 

When you have made two Zooks, you can pit them against each other using the Bamzooki Simulator. 

simulator

Click on any one of the four views at the bottom of the window to choose the view for your contest, or change it as you go along.