I managed to complete 19 adventures and then, for some reason, my game slot was erased. Perfect. I'm not sure if I have guts to complete it all over again to get the last badge... and I'm really disappointed :((
Would be nice to have this info:
1. List of colors and related features
2. Table - how features increase from pure gems (with levels)
3. Table - how features increase from dual gems (with levels)
4. What skills do and how their effect grows
5. What is "hue" and why it differs on the same color&level gems
And somehow I don't get any hidden levels, although I maximized half of the normal levels...
Quite interesting, yet, too simple. The battles could be faster (is this fancy animation of menus needed?), because they are so annoying when you have the best equipment.