In this unusual fighting game, you will not use traditional weapons to confront your opponent. Instead, you will be drawing lines. The virtual line will become a kind of shield you can use to stop the attacker and win some time. It seems the easiest task possible, however, you will need all your skills to make this imaginary border in time and in the right place. Start the game now – the initial levels are quite simple, and you will need to use these for training. Are you smart enough to succeed?