Dr. Mario World is receiving a substantial update today which brings with it three new characters. There’s the amusing Dr. Goomba Tower, Dr. Lakitu and Assistant Parabomb. The characters are included as a free update to the free-to-play iOS and Android smartphone game. This new update should be live now, or in a little bit. The update also adds in World 15, where you can now play through stages 561 through 580.