I’ve read this. The problem with Setris was also because of the similar name to Tetris and the music. It’s funny, but the game has now changed title to Sandtrix and it’s allowed to exists. Well, we will see. If someone from TTC would ask me to remove the game, I do it and can’t help it. But until then I don’t feel I did something wrong if I don’t earn money on it and I give credits to the original author of Tetris.