The Steam Deck was one of the best pieces of gaming tech of 2022, and now Valve has unveiled March's top 20 games that fans have been playing, with some of the biggest releases maintaining their high positions. With the Asus ROG Ally device in development, not to mention a portable system rumored to be coming from Sony, Valve's handheld may have some stiff competition on the horizon. Evidently, other companies are wanting a slice of that mobile PC pie.