Alright, what would take the number one spot this week eh ? Here are the ten top selling titles on Steam for the week as reported by Valve: 1.DOOM2.Stellaris3.DOOM Steam Pre-Purchase4.FINAL FANTASY X... Steam Weekly Top Ten May 16th 2016
And since it is on 2nd, 5th and 6th position. It is quite possible that it sold more copies than Doom.