Super NES Game Genie codes - Tetris and Dr. Mario

6DB4-1F65 Level never increases
DFB4-1405 After the first level your level increases every line
CBB7-C460 + D4B7-C4A0 + DDB7-C7D0 The same peice always drops
CBB2-3DA9 + DCB2-3FD9 + 3CB2-3F09 Always at high speed

Dr. Mario

CBC9-4466 + DCC9-44A6 + 3CC9-47D6 The same peice always drops-until you
hit the change button
CB67-37DC + DC67-370C + 3C67-376C The same peice always drops