Kingdom Defense is a castle defense game. The player has to protect the fortress by shooting down the goblins and other monsters. The monsters run towards the castle. When they reach them, they will attack. Help the archer aim at them and use magic attacks to kill large groups of monsters.
Players can unlock upgrades between levels in the Abilities menu. To have the archer aim, the player can tap the screen to move the crosshairs. To use the spells, the player can tap on the magic attack icon and then tap on the street to select the attack area.