: This code is often pre-applied to "hacked" versions of the game so that players start with 30 lives automatically without needing to enter the sequence. Technical Details of the File
: Up, Up, Down, Down, Left, Right, Left, Right, B, A, Start.
In the context of retro gaming, "Kontra" is the European title for the NES game Contra . The "30" is a direct reference to the , which grants players 30 lives: