For people who are reporting the kongregateAPI is not defined error on Kartridge, this problem is known and will be fixed in the next update (for some reason, Kartridge doesn't have the kongregateAPI and doesn't like if(kongregateAPI) for checking if it exists).
The black screen when flying on the dragon is an issue with the latest version of Chrome, not the game (and it works fine in other browsers and older versions of chrome). They added some security stuff for iframes (game windows inside a page), and for some reason that makes the island generation code run REALLY slowly. I've submitted a bug report to them, but who knows if they'll respond. You can either wait for the island to generate (it usually takes about a minute, and generates fine), use a different browser, or play the game outside of an iframe.
As a few of you have noticed, the wyrm pens were broken again in the last update (not growing wyrm blood or hatching cocoons). I just posted a hotfix for this, enjoy!
I think there's a bug with timewarp - when cast, the buttons for spells and attacking gray out (for the enemies turn), but then they don't enable when it is your turn, so the only thing you can do for the first turn after casting time wrap is match gems.
Since the game has a turn mechanic, I think you should be able to swap gems without making a match. This allows you to setup nice combos and continue without shuffling if there are no matches, but it is not broken as you lose a turn without gaining any gems.
Is it just me, or does saving the game not work? I saved and exited the game, and there was a continue button on the main page, but after closing my browser and opening it again later, the continue button was no longer there.
Great game, loved it overall (especially the ending, which actually made a lot of sense to me). Here are two comments on how you could improve it, but overall it's a 5/5. First, you should be able to load from before the boss battle (multiple load slots?). After the nighttime, it automatically saves, so if you made a mistake and lost against the nightmare, your stats reset and you can't load from before the battle. The second comment is on the velocity and deceleration, perhaps I'm just used to platformers where you can instantly stop, but it takes a long time to stop which can cause you to fall off of platforms by accident very easily. Faster stopping times (due to friction?) would make moving around easier.