I was working on a reply and wanted to do some research into verifying some things, but here is an article (there may be better articles out there): https://ar

I was working on a reply and wanted to do some research into verifying some things, but here is an article (there may be better articles out there): https://arstechnica.com/gaming/2012/06/defining-tetris-how-courts-judge-gaming-clones/ https://arstechnica.com/gaming/2012/06/defining-tetris-how-c... But the courts have ruled that making a game with the exact elements (tetronimos, ghost pieces, next-piece, 8x10 rows) infringes copyright. You cannot make a Tetris-clone without saying Tetris, without infringing on those elements. EVEN if you add additional functionality (the game in the article had powerups, etc,)