i have been playing this game for years on my kindlle fire. it freaking cures my adhd. its a game that forces you to think critically and not just run in guns blazing. though you can do that as well. you will die a lot playing this game. thats ok. when i say a lot. i mean hundreds of times. i have hundreds of hours of gameplay and often die in the first five minutes. ive never beat the game and ive been playing for years. i love the gameplay mechanics, and being able to beat the crap out of my enemies once im high level is fun.