Arkham Asylum: It's the most linear, but that plays a lot in its favour. In my opinion, it has the best setting and story. The linearity allowed for a more tailored experience, and it was very well tailored.

Arkham Knight: The biggest world, the most polished gameplay, the most beautiful looking, and has a new mystery villain. If you're a big Batman fan you might guess who it is early on, but it's still very cool. I think it also has the longest story as well, as well as the most villains.

Arkham Origins: It's a bit short, but it might have the most villains other than Arkham Knight, and great boss battles. The game takes place over Christmas, and I'd say it's a nice Christmas game. Gotham looks beautiful in the snow. I think you also get to hand around the Batman cave and with Alfred more than the other games.

Arkham City: Not bad by any means, but I played it last year for the first time and I felt underwhelmed. There's nothing it excels at over the other games, and it feels a bit outdated. At least, according to myself.