UM writes: With 32 million monthly players, League of Legends is currently dwarfing every other game out there in terms of player base. The free to play Multiplayer Online Battle Arena (MOBA) is surging in popularity all over the world in terms of a past time and a spectator sport. Hundreds of thousands tune in to watch pros play the game online, and it’s a fantastic experience that rivals any actual sporting event if you’re in attendance (I had a blast at the World Championship in Santa Monica last year).