Use different tactics to defeat your opponent. Move your units around the map and attack the enemy units. As you win battles you will gain points. The number of points depends on how well you play. You can spend your points to unlock new jobs and abilities. Simply click the buttons and click a coloured square to act on it. Clicking a non-coloured square will cancel. HP is the number of damage you can take. Your char will fall if it reaches zero. MP will get lover as you cast spells, if you don't have enough mp to cast, the abilitiy will cancel.