Currently, you can officially play Tekken 6 on the following platforms: PlayStation 4 & 5 : Released in 2023 as part of the PS Plus Classics Xbox Series X|S / Xbox One
If you see a site offering a Tekken 6 license key for PC game , look for these red flags:
was the first mainline entry in the franchise to receive an official PC release via Steam. No Digital Storefront: