Unfortunately, I also did not meet projects where you could earn coins by playing from scratch, all the projects that I saw require initial investments and write like a lottery without the ability to grind, farm coins by playing the games themselves. If there is information about such projects where you can raise money from scratch without investments, write)
Really myself i have not experience the process that stipulates that you will earn some amount of cryptocurrencies with game play, except the situation whereby some platform quiz competition they ask that the specified winners will receive like 2mbtc and the winner will use it for spinning game. So the process of spinning as they instructed, you may likely win and they will pay you in bitcoin if you wishes to withdraw in bitcoin, so this am narrating always occur in game's and round section.