Definitely can be addicting. I noticed that the battle phase seemed to freeze on some turn around the 45minute mark, everything else was working fine and I could exit to the menu and rejoin the same run so I didn't take a screenshot of what happened but the enemy had three monsters preparing to attack and I had no blockers but I couldn't click the confirm blockers button to make the attacks go through. Also would it be possible for you to make the whole card text appear upon hover not just the keywords? I just ask because personally I had a hard time reading some of the effects of the cards that had a lot of text so I couldn't play around them properly.