My rating goes down for the simple fact that the Chrono Crystals are not worth the amount being charged. Chrono Crystals are the in-game currency that allows Summons for high-grade characters like Legends Limited and Sparking. Unfortunately, the developers seem more focused on getting players to purchase Chrono Crystals, only for players like myself to get extremely disappointed after spending Cash or working hard in the game to acquire Chrono Crystals, for the drop rates to be horrible...