After revealing plans for mobile devices, Epic Games (Unreal Engine 4) announced a partnership with Mozilla (Firefox) to port over the next-gen game engine framework. Basically, it means there will soon be browser games crafted using Unreal Engine 4, on the Firefox browser.
Technology terms aside, gamers will not have to download any plugins for the games. More details are set to be revealed next week at Game Developers Conference in San Francisco. As a frequent browser gamer myself, it is awesome to see such improvements made.