Best difficult, fantasy, singleplayer and roguelite games Between mastery and instinct, Black Book pushes your limits. HELLCARD: every match tells a story. Vault of the Void turns dodging traps into a true strategic quest. The Adventure of Wildfrost sets new standards. Mage Tower 2: Call of Zadeus provides an acceptable dive into Strategy. Novus Orbis mixes Adventure and RPG with varying success.