Here are the ten top selling titles on Steam for the week as reported by Valve:
OUTRIDERS.
It Takes Two.
Forza Horizon 4.
Sea of Thieves.
Horizon Zero Dawn Complete Edition.
Halo: The Master Chief Collection.
Valheim.
Valve Index VR Kit.
Euro Truck Simulator 2 - Iberia.
The Binding of Isaac: Repentance.
