It allows users to apply "cheats" (memory alterations) to games, such as infinite health, ammo, or unlocking secret characters. Version 10.1 is highly sought after because it includes the largest built-in database of codes and features improved compatibility with later PS2 game releases compared to older versions (like v7, v8, or v9).
You might ask: Why not just use Codebreaker v9.2 or v10? The answer lies in stability and features. codebreaker ps2 v101 iso exclusive