The game Duohex will allow you to intervene in the battles of magicians. They not only compete with each other, but also from time to time sort things out and measure their strength in the battle arena. Your magician will have an AI-controlled assistant. You cannot interfere during the duel, but you must help your magicians prepare well for the duel. For this, an ancient book of spells will be used - a grimoire. Place spells on its pages and they will be used by your heroes. The outcome of the battle depends on your choice. Identical spells can be combined into Duohex.