Frustrating difficulty curve. My phone went dark on level 2 immediately after the tutorial and I couldn't see a thing even after turning up the brightness. Thankfully night mode only lasted a few tries but seriously? That should have held off until at least level 5 (or give us a flashlight in the beginning to see rocks until the battery dies on future levels). I liked the concept of night but it was too hard to do anything and at such a low level it arrived too early in the game before I had a chance to try things on my own without the tutorial guardrails.