DO Reborn fully replicates Warhammer: Dark Omen real-time tactics game where player takes role of Morgan Bernhardt, baddest mercenary army Commander of the Old World.
At the beginning, player's mercenary army - "the Grudgebringers" consists of just several units. Among them: infantry, crossbowmen, cannon and cavalry. As the game progresses player gets possibility to hire new units. The Grudgebringer cavalry unit is led by Morgan himself and if completely destroyed in battle then it is Game over. Other units death does not end the game but is highly undesirable since every unit is unique and can't be easily replaced with similar unit.
Each mission has a unique battlefield (level) where player army clashes with enemy AI army. At the start of each battle player has to choose up to 10 units from his army roster who will participate. When battle commences player goal is to outmaneuver enemy by issuing direct orders to his units which is usually outnumbered by enemy units.