Each new game generates a different monastery thanks to a semi-procedural system. Everything from the monastery lay-out to item location is variable making each play session as fresh as the first. Also, choose from several different escape plans to execute, each with its own stories, objectives, special characters and other surprises.
Time is continuous in the game; Day & Night phases are split with actions to complete during the day and preparation activities (healing/crafting/resting) at night. Most actions can be completed during the day while others, are better done at night with fewer eyes watching. But there are reasons you should not go prowling at night.