PlayStation 4
The SKU Option is vital for browsing the data on this page, and without choosing an option the data will appear messy, with the same game appear over and over again.
The All SKUs option makes the table displays all the individual SKUs on released on the platform, which is to say a game and all it's individual rereleases separately.
The Combined SKUs option makes the table display the addition of all the rereleases of one game as one single entry, which is to say a game and all it's individual rereleases combined, the rerelases are not displayed on this option. In order to indicate that the entry is a combined SKU it has the tag [All Versions]