Yes, Mr Jack is indeed replayable as it offers a high degree of variability and strategic depth. Despite having only a limited number of characters available in each game session, their unique abilities create various combinations which ensure that each playthrough feels distinct. Additionally, there are multiple ways for Mr Jack to achieve victory, adding to its replayability factor. Moreover, the game includes an asymmetric gameplay mechanic where both players possess different objectives and approaches - this constantly keeps players engaged and interested in playing again.