How do you follow up a game like Frog Fractions (2012)? That’s the question its creator Jim Crawford had promised an answer to for two years. On December 27th, 2016, he delivered with the release of Frog Fractions 2, which he had hidden away inside a fairy-themed city builder called Glittermitten Grove. The problem with making a sequel to Frog Fractions is that it’s a game that relies on the unexpected. The original starts off pretending to teach you about fractions with a simple bug-eating game, but then takes a sudden turn and sends you on a wild adventure, riding a dragon across…