The North American Star League, often abbreviated as NASL, is a competitive StarCraft 2 league that was introduced in February 2011. The North American Star League Season 4 is the fourth season of the North American Star League. 45 players compete for an unannounced prize pool over a three-month season. 4 players qualified from the Season 3 open tournament, 4 players qualify from the Season 4 qualifiers, 4 players are invited and the remaining 32 players qualified from their placement in season 3.