Complex sentence: The IGJ was considered an inspiration for later game jams, including the Nordic Game Jam and the Global Game Jam (GGJ), which was first held in 2009 with 1650 participants at 53 locations.
Split into simpler sentences: The IGJ was considered an inspiration for later game jams including the Nordic Game Jam and the Global Game Jam (GGJ). GGJ was first held in 2009 with 1650 participants in 53 locations.