Codebreaker 10.1 is a PlayStation 2 cheat device/utility distributed as an ISO for use with PS2 homebrew methods (e.g., with swap tricks, modchips, or memory-card/USB loaders). It provides an interface to apply cheat codes (GameShark/Action Replay-style) and save/load cheat lists, often packaged to run under the PS2’s ELF/ISO homebrew environment. "PS2L" here likely denotes a PS2 Linux or PS2 loader variant or simply a labeling used by scene releases.
Developed by Pelican Accessories, Codebreaker is a cheat device that allows players to inject "raw codes" into their favorite PS2 titles. Version 10.1 is particularly famous because it features an updated code list supporting over 2,000 games across both PAL and NTSC regions. Setting Up Codebreaker on Modern Emulators (PCSX2) Codebreaker 10.1 Iso Ps2l