Hero Fighter the game supports up to 3 human players on one computer. Player can also challenge other players through the internet in Network Game mode. Instructions: In Hero Fighter, characters can be moved by pressing the respective up, down, left, and right keys. The defend, jump, and attack buttons are used to make the character perform an action. Attacking another character causes him or her to lose HP (health points), represented by a red bar below the character. Each character also has special attacks that can be activated by pressing a certain combination of keys. Most of these special attacks take up MP (mana points), represented by a blue bar below the character.