I agree—this game is really frustrating because it's difficult to see the barriers. Challenging games are often frustrating, don't disagree with you there - but this particular flavor of challenge isn't really fun. I'd prefer "it came too fast" or "it was moving and hit me" to "the wall looked just like the opening." I definitely got better after my first few plays at discerning the walls from the openings, but it took me a few tries to even realize that that's why I was dying. I imagine many people will give up before I did.