The following are known Game Genie Codes for Tetris 2 on Nintendo Entertainment System (NES).

• AAVZVYEA
  Cannot pause the game by pressing the Start Button
• AVEXOYXZ
  Do not hide remaining pieces during pause

1-Player Codes

• AAUEUSSO
  Speed does not increase
• VNUEUSSO
  Speed increases at a much faster rate
• TEXAKYPA
  Start and stay at a speed of 25
• ZEKESSPP + PESAOSAP
  Max speed is 2
• ZEKESSPO + PESAOSAO
  Max speed is 10
• YEKESSPO + TESAOSAO
  Max speed is 15
• GOKESSPP + LOSAOSAP
  Max speed is 20

1-Player vs 2-Player/Computer Player Codes

• OZNETPOU + PANEYPAA
  Every round starts with 4 fixed blocks
• OZNETPOU + YANEYPAA
  Every round starts with 10 fixed blocks
• OZNETPOU + GANEYPAE
  Every round starts with 15 fixed blocks
• OZNETPOU + PPNEYPAA
  Every round starts with 20 fixed blocks