Entertaining
Suggestions:
The game was a tad easy and hard mode wasn't really something I could go for, as it increased the difficulty only by making it more annoying.
Try adding variations on this idea, using power-ups, traps, or something to freshen up the gameplay.
The difficulty curve was non existent. Try making the levels in an easiest to hardest perspective. It's easiest to show difficulty when you have the ability to lose. Ex: Trapped in loop, death by trap, out of time, whatever.
The only other thing I can think of is to add more goals to have each level. This might be like "beat the level in x seconds or x turns". You count that already, so adding a sticker of a clock or turn sign on the level when you beat that goal could make your game have replay value.
Plus side: Solid system. Good basis. Good for a few minutes.