Personally, I enjoyed it though and it is good but the challenge was tough and that's what put a fair amount of people off. However, they're clearly trying to make big improvements to it. So far, it seems like possibly the only Zachtronics title that hasn't become some kind of instant classic. Möbius Front '83, the difficult turn-based strategy game from puzzle masters Zachtronics has seen a big free expansion adding in quite a lot.