So, I downloaded Not Tetris 2. I tried to open the folder and it said that the folder is invalid. I tried again, and the same result, so I deleted it. Later, I downloaded it again, and tried again and the same result again, the folder is invalid. I tried in 7-zip, but it STILL said the folder is invalid. Does anyone have the same problem or know how to fix it or get into the folder and start Not Tetris 2?