Maybe they have. This is a korean project, and anything goes with the korean is like a spreading virus. I just recently known Ludena protocol but their game is only exclusive for Koreans. But I am having a feeling that they will open their project tl global users. I asked about their ann regarding some details, and discovered that they dont launch any public sale, but already have a good platform. So probably we can see an IEO for this project. Koreans love cryptocurrency so the demand for this will be noticed. They only launched their airdrop but probably they will launch a global promotions at the same time on their IEO. Thats how a good project rolls. This is just a theory, and they dont confirm it but I think this will happen. Like what occur on cartesi project.