Your mission in this unique tower defense game is to stop bad monsters that are coming to attack your castle. Build towers using the buttons on the main panel. Use YOUR MOUSE and click on th tower to select it, then you can upgrade it, sell it or change its aura. Killing monsters earns you money to buy or upgrade towers. Power is needed for towers to operate. Build and upgrade power stations. Use YOUR MOUSE to move your hero on the screen or direct him to attack. The hero has also special abilities and you can change his aura to interact with the auras of towers. Monsters occasionally drop power ups. Click on them and your hero will retrieve them. Good luck!