Valve's popular handheld gaming PC recently passed 14,200 officially rated games, meaning there's never been a better time to own one.
This is just talking about games approved through Valve's verification process. There are a lot of games that work that are "unverified", not to mention the entire history of gaming available through emulation.
I don't game much anymore but when I do, I grab my Deck and go snuggle next to the fam while they watch dumb TV and I play dumb old single player games that run beautifully on the hardware.