This is a great game and Id give it five stars except for a few minor gripes and some suggested improvements. I think anyone reading this will know the gist of the game, so Ill dive right in...
1) The biggest gripe I have is that I think many of the puzzles are not winnable. The dots on the puzzle are positioned randomly and if they happen to be in positioned optimally, the puzzle isnt winnable. If you think a puzzle isnt winnable, you can use the back arrow and generate a new puzzle, but I rarely use that option.
2) Another problem has already been mentioned--the colors can be difficult to distinguish, especially the browns and reds. The dots should always be distinctly different colors.
3) After a puzzle is done, you can;t review what happened. There should be a way to replay the last puzzle so that you can review what happened, especially if it was a loss.
4) It would be nice to have a way to play the same puzzle again after a loss. There are usually several options for attacking a puzzle, it would be nice to be able to compare different strategies by plaing the same puzzle multiple times.
5) Dot placement repositioning. It can be difficult to place your dot exactly where you want it. Probably half of my losses are because my dot wasnt placed precisely where I wanted. There should be a way to adjust the dot after placement, or to remove a dot and place it again.
6) The game designers could have an algorythm to test a puzzle to determine if its winnable and how winnable it may be. If the puzzles is not winnable, it would be regenerated. By "how winnable" I mean how many optins there are to win. If a puzzle is winnable only if a dot is placed within a few pixels, then the puzzle would winnable, but extremely difficult.
the game is great the way it is, with a few adjustments, it could be exceptional.