Around 12 new mega evolutions in this game. Charizard gets a mega Z form and looks like a serpent (fire/ground). Lucario gets a mega Z form becomes fighting type only. The ralts line gets another split evolution and is psychic/dark. Hoopa gets a Taurean form and becomes fighting/dark. Volcanion gets Eruption form and becomes fire/rock. You will see Lysandres cousin Lyca. Lots of elements taken from the game AC. Lots of collectibles, city exploration, etc. There is a scene in the game where the professor flies you to Terminus cave and you will meet the A legendary and is the rival of Zygarde. All I have to reveal at the moment