FFVII is the best! In this FF, you get to equip stones called materia and use abilities based on what the materia is. And the best part is, after a while, when you bring a materia to its higest level, it will form another materia of the same type. The amount of materia you can equip is based on what weapon you have equipped. And you can improve materia with other materia, on some occassions. There are five different types of materia: