GameShark hardware (cartridge/disc) no longer works on modern consoles. It required physical slots (PS1, PS2, GBA, N64, GCN, Xbox, PSP) and direct memory patching—impossible on sealed, encrypted systems (PS3/4/5, Xbox 360/One/Series, Switch, PC).
GameShark's era ended ~2006. Modern tools are software-based, platform-specific, and riskier online.