I think it depends on what you’re looking for. Arkham asylum and Arkham city are definitely the best ones but I’ve always liked the more linear story/gameplay of Arkham Asylum more. They’re both great though.
I’d love to see remakes of the original Phantasy Star series. I enjoy PSO, but it’s just not the same.
The Tomb Raider 2013 reboot is great and works really well on the Deck.
I run it locally for calendar and storage without any issues. Server is a 10 year old Mac Mini running Open Media Vault and I’m using the Nextcloud all-in-one docker image with Portainer.
It can take a bit of work to get set up, but I’ve found the maintenance to be pretty easy.