Amazon.com: Batman Arkham Collection (Standard Edition) (PS4) : Video Games
Buy Batman Arkham Collection (PS4)+The Witcher 3: Wild Hunt - Game of the Year Edition (Free PS5 Upgrade) Online at Low Prices in India | WB Games Video Games - Amazon.in
It still baffles me that you can't play Gotham Knights on PS4 but the Arkham collection is available on PS1 : r/BatmanArkham