Traditionally, online players communicate with others in a virtual world. Compared with personal computer games, we can’t deny that it does come along with more rich content. However, once the game supplier decides to quit it, the players’ assets will vanish with it and become history, which means they are not the “Property” literally.
If your characters are not tradable, there will be no settlement asset. In fact, game suppliers won’t allow players to exploit the game. Everyone is at the mercy of their whims. Perhaps someone will say, they can still sell their accounts on the trading platform where nothing can be verified. That’s the reason why we heard of scams now and then, which is also why NFT games ride on the wave of it.