We have seen that the demo might have been a bit easy for some players, but we also see many people who can barely finish the demo. This led us to wonder how we could give players with potentially previous Nurikabe experience a taste of harder and bigger levels, without being too discouraging for newcomers.
Our current solution is a bit of an odd one, but you can access four extra hard levels by clicking the "User Levels" button 5 times in a row!
Keep in mind that these levels are from varying points of the game, and the difficulty ramps up quite fast compared to the full game, where you can improve at your own pace.