At first, I was confused because I didn’t know what to do. But I figured it out pretty quickly, and suddenly I was determined to win at all costs. Congratulate me—I personally killed Satan =)
It’s a very addictive and fun game, though I’d suggest adding some kind of landmarks — I was running around looking for crosses and crystals relying purely on random, "chemicals" and divine intervention, lol. But maybe it was planned as a game mechanic.
Also, there should be a warning label for people with epilepsy.