I've been playing numerous escape games recently, but the huge levels in this game was/is (still playing) refreshing.
I can understand people not liking that you can't save your progress since the levels are so big, but once you've figured things out you can go through them quickly and end up where you left off, if you have to restart. It would be nice to be able to save, but to me it's not a big deal.
The puzzles can actually be challenging, which is even more refreshing.
Overall I gave it 5 stars because there's nothing about it I don't like, and plenty that I do. Another good game from this developer. Thanks.