This is a bit unique for a runner game. I love the idea, the constant change of environment so you can never be too at ease, and new monsters and higher levels of difficulty are gradually introduced rather than thrown at you in an instant. However, despite the graphics being a bit dumbed down when compared to other similar games, it still lags a bit, making gameplay unnecessarily more stressful than needed, and some monsters (such as the hanged man and the emperor, whose cries should be heard even before they pop out, unlike other monsters who do) and the moving walls at the later floors happen too quickly to react without dying, and although the lux are easy and plentiful enough to collect and use, the game shouldn't have the flaws I've mentioned so that lux are necessary to get to floor 10 or above, and although the revive feature is handy, it's never good to have to rely on such things just to get far. If the problems are fixed, this game will be an easy 5 stars. It's very fun and addicting, just with flaws.