Comment by Telaneo

It's Skyrim Special edition that's on that spot. The OG version hasn't been sold in years on Steam and is tracked separately. The VR edition is sold and tracked separately. The Anniversary edition is sold as DLC for the Special edition, and not as a separate game. I think the Legendary edition was sold as a bundle for the OG version after all the DLCs came out. Either way, it too cannot be bought on Steam any more.