It's billed as "Massive gaming capability, heavy-duty AI compute, and standard PC parts, all in 4.5L." on the Framework website. And then further below it has "All the power to play all the games." And it has a dedicated "Gaming" tab with benchmarks and stuff.

So I'd say yes.

their marketing photos include 1) a game controller next to the PC, 2) a bottle of Bawls soda next to the PC, so I think so.