How come no music is played? Is it a bug? How long until you can fix it?
Other than that, this is my favorite Tetris clone ever. The added blocks make the game more challenging, and the secret "Classic Mode" is almost identical to NES Tetris. I'm not gonna spoil how to unlock it, however.
I hope you can add more to this game, maybe a mode like Arika's "Tetris: The Grand Master" series of games? Maybe add a Bombliss mode? Hell, even online multiplayer?
I look forward to seeing what's next for Multimino.