Dive into the thrilling world of indoor and arena football! This ranking explores the storied history and current landscape of leagues that brought the game indoors, from the iconic Arena Football League (AFL) and its developmental league AF2, to the modern contenders like the Indoor Football League (IFL) and National Arena League (NAL). Discover forgotten gems and enduring powerhouses like Extreme Football League (XL) and Continental Indoor Football League (CIFL) as we rank these gridiron giants. Whether you're a die-hard fan or new to the fast-paced, high-scoring action, this list breaks down the leagues that have defined arena football.