Pro Evolution Soccer 2015 (PES 2015) is no longer available for direct digital download via official primary storefronts like Steam, as it has been delisted. However, you can still find it through secondary markets or authorized resellers. Ways to Acquire the PC Game
You may find physical DVD copies for PC on auction sites or through second-hand retailers. These can be installed using a disc drive and usually require the included product key.
You can purchase digital keys (e.g., Steam Gifts) from third-party sites like G2A . Once a key is redeemed, the game remains in your library for download.