The Odin 3 Portal combines extraordinary power, a gorgeous 7-inch OLED and superb ergonomics. I put AYN's finest handheld yet through its paces, from classic consoles to modern PC games, and speak with the developers behind Eden, ARMSX3, GameNative and DroidDeck.
If you read the review you’d see they mention x64 emulation through things like GameNative. You can play lots of steam games on android devices now, the major limiting factor is the power of the hardware on android devices and driver support.