> I don't think the scoring system is good. According to it the best behaviour would be to build all tetraminos on one side and wait for "I" tetramino to arrive

> I don't think the scoring system is good. According to it the best behaviour would be to build all tetraminos on one side and wait for "I" tetramino to arrive and score 4. Except, of course, that's exactly the way every single real game of tetris works.