You may invest in this project and make some profit but in the long term can this project be sustainable? It is actually just a little game. I just trade them instead of investing a lot of money
What makes you think that?
From my understanding it will be a p2p technology to host multiplayer games. Since every game developer can make use of network units, it could be an infinite amount of games.
Not read the link, if it is as you say technology to host p2p games, I dont see the use case or problem they are trying to solve. People have shared game servers for years (decades). If its a bit deeper than that, then it needs to be integrated into a established game development platform, like Unity etc, to have any value. Enjin and another I cant recall do this, it is an area with large potential.