Best free to play and singleplayer games Black Book: Prologue offers a simple yet charming take on Adventure. An underwhelming experience overall: DPS IDLE. Gwent: The Witcher Card Game mixes RPG and Strategy with varying success. Mythgard occasionally shines thanks to its unique poker mechanics. Despite its ambitions, Warhammer 40,000: Warpforge lacks tactical. CD2: Trap Master - Prologue tries to innovate with unique poker mechanics.