Too stingy. By making everything hyperexpensive with the in-game currency, you attempt to sell more things for real money. You should have made it more enjoyable without spending $, so that we're encouraged that it'll be worth spending money. You essentially made it so the only way to get things for free is to grind to the point of not having fun.
He runs too slow for the longer jigsawish levels, and I strongly dislike the ones where you actually can't tell whether you'll be killed or saved. It's not fun when one of the areas is completely blank, and you have to guess which tile to place it above.
Too randomised. I can leave some levels in their starting position and they'll still topple due to random vars. Physics games should be flawless, what with being a perfect environment...
 "Netbots"){kind=icon}
 "Homerun In Berzerk Land: Berzerk Ball"){kind=icon}
 "Zombaby Bouncer"){kind=icon}
 "Aztec God Game"){kind=icon}
 "Thousand Dollar Soul"){kind=icon}
 "One Step Back"){kind=icon}
 "Remnants of Skystone"){kind=icon}
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 "Neon Rider"){kind=icon}
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 "Finding my Heart"){kind=icon}
 "A Knight's Story 2"){kind=icon}
 "Take Something Literally"){kind=icon}
 "Totem Destroyer 2"){kind=icon}
 "Tangerine Panic!"){kind=icon}