Download size

How many GB is Digital Market Simulator?

2 GB

That is less than the typical Role-playing (RPG) game, which needs about 6 GB.

Leave at least 8 GB free: games need headroom to unpack updates.

The figure is the storage Steam lists as required for this game, not a measured download.

Run a marketplace where you can sell games and everything related, take care of customers and shape it however you want.