I really, really want to like this series of games.... unfortunately, I'm just continuously frustrated by puzzles that seem illogical because they're presented out of context or by not seeing some tiny item on the screen.
Case in point... I managed to open the door on the first room pretty quickly, but didn't see the green arrow appear on the top of the screen and spent a ridiculous amount of time trying to figure out what was wrong.
The other really big problem I have is with the walkthroughs.... they do a very poor job of explaining WHY the puzzles work the way they do, which I think is what most people would prefer. A simple text file giving hints would be much preferred over a video that shows you some abstract answer.