Such a good game until the recent "update" which arbitrarily devalued many of the powerups I'd acquired. I wouldn't have invested in them if I'd known their value would change so dramatically. It's rediculous. Now I pass by several powerups as my activated powerup runs down. Its completely changed the game for the worse but more importantly, its made me leary of investing any more time or money into a game where the creators are willing to adjust the games DNA for a quick money grab!