The Xbox Ally X may be a fantastic handheld, but its improvements weren't enough to convince me to upgrade from the ASUS ROG Ally X, my PC gaming handheld of choice for over two years. What about an Xbox Ally X Plus, though, delivering a handful of fresh upgrades on top of everything that makes the original great? In a nutshell, that's the ASUS ROG Xbox Ally X20, a special edition handheld that does a lot more than celebrate 20 years of Republic of Gamers and 25 years of Xbox.