This took me a long time to complete. After walking away from it out of frustration for months at a time, finally got around to finishing it tonight. The game is great from the start and extremely challenging at some points (there were a few random levels that were the death of me). Even though I was really frustrated at times, the challenge was perfect. It kept me engaged the entire time and kept me excited for the next level. I never once got bored. This is definitely one of my favorite games I’ve played in recent years.