A great RPG that can keep you busy forever!
Early in the game you are accompanied by the most important creature named Incarnus and every time you beat a temple Incarnus evolves into a more powerful monster.
To get new monsters you can recruit them from the wild or you can take monsters you already own and fuse them together to make a new and usually more powerful monster. There are also monsters you cant get by fusing or recruiting such as Emprea(giant legendary bird) to get monsters like this you must get more monsters in your collection or more skills in your collection. Skills are attacks monsters learn by getting skill points.
You get skill points by leveling up youre monsters or getting skill point orbs. Skills vary for different monsters and there are different kinds of skills. There is attack skills like flame slash,death skills like kamikazee,status skills like poison breath,and healing spells like fullheal.
I could talk about plenty more but Ive got to cut it short here, I reccomend getting this game and also getting te guidebook.