This is the first non-science-related casual game I've ever seen in which a grasp of scientific notation is not only useful but expected. (It was in Frog Fractions, too, but didn't actually do anything there.)
There are two ways to do level 16. One launches the lit ball left, and one launches it right. The one where the lit ball is launched right seems more reliable.
In the dragon level, when the boulder rolls to the left through the hallway just above the red monster, just as the boulder is about to enter the square above the monster both boulder and monster disappear with a "the arrow trap killed the creature" message. Handy, but probably not intended.
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