Over the weekend, 20 top PlayerUnknown's Battlegrounds teams faced off at Intel Extreme Masters in Oakland, California. From inside a series of what we might call PlayerUnknown's BattleCubicles, squads squabbled over a $US200,000 ($264,396) prize pool. When the smoke cleared, a team that didn't even get invited took top honours, besting big-name teams, without even winning the final match. This shows that PUBG has potential to be a very different kind of esport, but it isn't there yet.