CHROME USERS: It isn't the game! Open a new tab. type in "about:plugins". Press +Detail. There are likely two flash files. Disable the first one, and your controls should work again!
It should be noted, again, that when playing a level for the second (or third or fourth or fifth...) time, the only exp you get is what is above what you previously got. For example, if you've gotten 1000 on a map before and you get 1200 this time, you only get 200 exp.
Everyone with loading issues: Make sure you've allowed flash plenty of storage room on your computer. Last time I had loading issues, that was the source.
to everyone complaining about paying for premium content: Does the developer really not deserve some credit for his work? I think that the ~$5 is well worth the additional enjoyment I've gotten playing. Not to mention the fact that even without premium content, this game is EXCELLENT. Premium really only matters if you aren't very good and need the skills, or if you are very good and want to see how high a grade gem you can make / how many monsters you can summon and still beat endurance. So... stop whining, this man has given you a BRILLIANT game for free, and is asking you to pay a small sum of money if you want to have a FANTASTICALLY BRILLIANT game instead.
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 "GemCraft Labyrinth"){kind=icon}
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 "Starcede"){kind=icon}
 "Flight"){kind=icon}