The latest update to Valve's Steam client now includes a message before starting a game, helpfully informing a player that they will require a controller for the best gameplay experience. The Steam client is still one of the most popular PC gaming storefronts and platforms for gamers to use. Several AAA and indie titles are published on Steam, which all feature different control methods. Steam's controller support has been pretty extensive, especially with how advanced the Steam Input can be in reading several different controllers.