This took much longer than I expected to play through, and it was wonderful the whole time. The rainbow gems double very well as the currency, the objective, and a tactical item to play off of. Getting bigger gems to drop was very endorphins. Not to mention nearly every aspect of the game being a polished experience. The main thing I would probably like is some indication of how well you did in the end- at least a display of the number of days taken to get the market.
I swear the game was really adamant about me ending up just one short of combos, or one gem short of purchases. The delightful stage music got me through these trying times.