I have to say, that kept me playing for a long time. This was mainly because the map was so huge, but I don't really have anything against that. This game was a bit easy to play, since you can just scourge the map going left to right from top to bottom. Not only that, but you could just outrun Slenderman without any huge effects after. I would recommend that the next game you make (if you ever decide to continue this) would be to have Slenderman not only appear next to you, but also give chase to you for a while before returning to the shadows. The dimming lights certainly made the experience more challenging to me (which I like). Maybe next time you could slow the dimming, but have the light instead go from really dim to no light at all, which should make the game all the more difficult to play (which makes it more fun (at least for me) to enjoy). Overall, I would give this game a good 8/10. Neat job!