Just finished the last pic in Zen and came looking for more; thank you for making all of these!
Very engrossing especially if you are a visual and/or kinetic thinker. Although there are no time limits or anything chasing you, these are still very challenging puzzles. I have stayed up late many times to solve "just one more"; now I plan not to sleep for a year!
ErikSF999 about PathPix Lite