Playing League of Legends on the Steam Deck may be doable, however, it will take some technical savvy and creativity in order to get the game to run.
Whether or not Valve's newest handheld gaming console will be able to run League of Legends, we'll have to see until the console comes out. But, it's likely that there will be some workaround in order to do so. The short answer for this question is maybe.
The reason for it is because the Steam Deck is using a Linux-based operating system. Due to that, League of Legends will likely need to have a Windows-based operating system in order for it to work on the Steam Deck, which is possible.
Can You Play League of Legends on Steam Deck?
The main issue that players will run into is that they may have to buy a full Windows license and find a way in order to modify their Linux machines into something that runs Windows instead. Fortunately, Valve has promised that this type of customization will be possible on the Steam Deck.
However, the SteamOS that is implemented in the system does have the Proton within it, which is a compatibility layer that allows Linux systems to play most games that could otherwise only be played on Windows. Though there are a few games that players wouldn't be able to play, like Apex Legends, in particular. That said, the technical specifications on the system to play League of Legends should be able to run it with some competence if players manage to find a fix to the Linux compatibility for the game.
Also, if players may run into some trouble trying to play League of Legends not only because of the software of the system but how the console is designed to be handheld. The only way that players will at least effectively play League of Legends on the console is by plugging it into the stationary dock and attaching a keyboard and mouse to the dock. There is a trackpad available in order to possibly give the creative
Playing League of Legends on the Steam Deck will definitely be an ambitious journey, but it is something worth seeing.