Zero Escape - Virtue's Last Reward (ナゾの脱出２〜罪と罰〜, Nazo no Dasshutsu 2 - Tsumi to Batsu) is a visual novel and puzzle adventure game developed by Chunsoft and published by Aksys Games. It is the sequel to the 2009 game 999: Nine Hours, Nine Persons, Nine Doors. The game follows protagonist Sigma, who is abducted and forced to take part in the 'Nonary Game: Ambidex Edition,' a deadly game of life or death. Players must solve puzzles, make difficult decisions, and form alliances in order to survive. The game features a branching story line with multiple endings, and a unique 'AB Game' mechanic that allows players to make decisions that affect the story. With a gripping story and challenging puzzles, Zero Escape - Virtue's Last Reward is an immersive and thrilling adventure.