Here is a video of Huntercoin in 2014. This shows a basic system where the incentive is to make money, with some fun thrown in (the first blockchain game, play2earn game, on-chain game and more).
Soccerverse originates from Soccer Manager Worlds for the managerial gameplay, the blockchain tech side uses Xaya Tech, and of which originates from Huntercoin.
You can read more about huntercoin here : Huntercoin
For those into technical details about how Soccerverse uses Xaya technology to allow for unstoppable and computationally complex persistant MMOs, you can check out this article and we'll post a video separately and with others.