Modern standardization is the current specification The Tetris Company enforces for making all new Tetris games alike in form.

Current modern rules include:

• 22x10 cell playing field
• Tetromino colors
  • i looks cyan
  • o looks yellow
  • t looks purple
  • s looks green
  • z looks red
  • j looks blue
  • l looks orange
• Tetromino spawn locations
  • i and o spawn in the middle columns
  • The rest spawn in the left-middle columns