A few standouts: * Into The Breach (great Android port) * Moonlighter * Poinpy * Dead Cells * OXENFREE * World Of Goo
Many of these were already available, but all those on the list were/are indie darlings and pretty good games. For the most part they're putting out good stuff, not just the typical mobile trash.
Full games list here: https://help.netflix.com/en/node/121442