Needs a way to click on partially hidden squares. Nothing more annoying than successfully building an elaborate path; going in to place the directional arrows for the final touch; and finding that the game just won't let you place that final arrow because the square is partly hidden by your build. Delete most of your path; place the arrow; then rebuild the whole thing again.
The game was good, but it could benefit with some Zoom capabilities. As an educational tool, I often can't tell quite where the "correct" flag is pointing. Think it would be nice if the correct country was displayed blown-up during the solution countdown.
I wasn't directly tracking all the unused parts (and which levels). But if we are building a list, add on levels, 24, 25, and 31 as specific ones I remember that GameTommy didn't include.
Too bad the tiniest bit of lag can destroy undead mode. If you beat several days, but poorly, you just don't have enough money to buy the big rock. And the game doesn't allow replaying a bad day to improve the income.
Two things I don't like that would be so easy to fix... 1. Let me start the song using one of the keys I need my fingers on when playing (forcing me to press the mouse button and then find the keys once the song is already playing isn't nice). 2. Use S, D, F as the left hand keys instead of A, S, D (I know how to type. My brain has my index finger mapped to F. I either need to use my pinky instead of my best finger or fight my brain-mapping. Either is going to severely hamper my score).
Game was cute and all, but wait... I completed the entire game, collecting all 90 stars, and the 2 achievements I haven't completed yet (color changes 150 and jumps 1500) are because I did the game too efficiently? That's not how it normally works. Would have been interesting to see minimum jump count required and what our best was on each level.
 "Isoball 3"){kind=icon}
 "Globetrotter XL"){kind=icon}
 "Liquid Measure 2"){kind=icon}
 "The Enchanted Cave"){kind=icon}
 "Crush The Castle 2 PP"){kind=icon}
 "Super Crazy Guitar Maniac Deluxe 2"){kind=icon}
 "Ninja Painter"){kind=icon}