Remember when NFTs sold for millions of dollars? 95% of the digital collectibles are now probably worthless.::NFTs had a huge bull run two years ago, with billions of dollars per month in trading volume, but now most have crashed to zero, a study found.
You’re adding another person to the equation (the player that sells their game) and everyone is supposed to profit? Someone will make a loss compared to the status quo for this to work out and it’s never the marketplace operator.
When we buy a game, there is already an intermediary. The GoG, Steam, Itch, whatever. This would be the same number of middlemen. The unique selling point would actually be disintermediation, since buyers would be able to resell the game and creators would be cut into the ‘used game’ market, giving them an incentive to maintain its quality long-term. There are other useful angles as well, but that’s the one I like best.