Lonely Knight takes the player to a medieval world where the main character embarks on a path of revenge, trying to kill everyone who was involved in the death of his wife. He fights an army that has invaded his lands. The actions of the central character will affect the rules of the game and determine the future fate of the country. As you progress, the user will have to make important decisions that affect various events and gameplay features.

Battles in Lonely Knight will take place on open fields, during sieges of castles, inside palaces and cities. Many units controlled by artificial intelligence will participate in the battle. The gamer is able to help allies or strictly pursue his own goal. The protagonist's name is Tristan, his longtime friend grabbed his wife so that he would return to the army again. After this, the main character went on an unexpected journey through dangerous lands.

On the way, the user will have to face deadly monsters and huge bosses. Opponents have their own weapons, abilities and attack combinations. Mythical creatures will be ready to deal maximum damage. Deft movements and blocks will help you avoid blows and not receive unnecessary damage. The player will meet dragons, skeletons, demons, ghosts and other minions of the Dark Army.