Beat the game in Jack difficulty, so far, I didn't find any bugs, UI is nicely made, gameplay is fine, but to be honest I not sure if I can give good feedback and the reason it's because this is not really my type of game, only memory of me playing solitaire was many years ago on Windows XP. That said, I would like to point that the game have a very relaxing music, very relaxing... personally I would like something more dynamic, like something you would hear in a old rpg game from the snes era, but again, those are just my personal preferences. Overall, good game.