IN FIGHT KNIGHT you have to control a fighting knight. He goes to a tower in which thousands of people died. You need to explore every room. At first, the character has nothing in his inventory; he has to fight with his bare hands. There is no shield or cover, you can only dodge attacks. The hero's partner is Captain Cook. The doors to the castle rooms are closed. It is possible to open them by destroying them with your fist. At the bottom of the screen is a health bar. At the entrance to the building he meets the first enemy – a skeleton in armor and with a sword. After killing him, the protagonist takes the enemy's weapon, but immediately loses it. You can fight against crowds of skeletons using combinations of blows.

A witch will help you get through FIGHT KNIGHT. Having met the hero, she gives him a glass container with a medicinal mixture. After drinking it, 15 health points are restored. At any time you can visit the witch's shop to buy medicines and other useful items. The interior design of the castle changes on each floor. At 3, the main character finds himself in the Desert Desert location. Instead of skeletons, mummies attack. It is possible to use a mini-map. Pink markers indicate important places to explore. There will also be other monsters – land sharks and Tomb Whipper – a man in a coat and hat with sharp blades instead of hands. In the final, the hero will fight the boss Hotrock Hiker.