Gameplay: You are one of the two knights. Every night you fight, trying to score points in order to buy upgrades during daytime. Black Knight/White Knight Controls: Left arrow/'S': Move left. Right arrow/'F': Move right. Up arrow/'E': Jump. Down arrow/'D': Purchase upgrade and attack. Upgrades: Cost 5 points each, can be purchased any number of times. SPD: Speed. Increases movement speed. DEF: Defense. Increases invulnerability period after being hit. ATK: Attack. Increases attack speed. JMP: Jump. Increases jump height.