While I would rate Mystery Riddles a 3 for myself, I have given it a 4 with the assumption that it will be used by young, inexperienced players. Pros --Excellent interactive teaching module for nonograms (Pic-a-Pix) --Hints available --Multiple color squares --Can be re-set and re-played several times --toggle (paint brush/X) --no timers on puzzle page --numbers are dark and easy to see --grid lines are clear --Row and column of cursor are high-lighted, --encourages manually erasing squares to prevent guessing (a con for experienced players) --get to save a kingdom by learning to weave tapestries (there's motivation for you!) Cons for learners: --Error limits --no help mode (see Paint It Back) --cannot minimize the game or put it in the dock --not a lot to the puzzles --can only re-set and re-use a limited number of times Cons for me: --Must go through narrative, instruction module, 5x5 puzzles every time the game is re-set --narrative is long and intrusive --easy puzzles --not particularly interesting