Not necessarily. Action Replay (AR) is a **brand of hardware cheat device** (Datel). Whether you need it depends on the **platform, game, and type of cheat**.
| Platform | Native Cheats? | AR / GameShark / CodeBreaker Needed? | Modern Alternatives |
|---|---|---|---|
| NES / SNES / GB / GBC / GBA | Often built-in (Konami Code, debug menus) | Optional (Game Genie, Pro Action Replay) | Emulator cheat menus (RetroArch, Mesen, mGBA) |
| N64 / PS1 / Saturn / Dreamcast | Rare (button combos at title screen) | **Yes** (GameShark, AR, Xploder) | EverDrive / MODE / Fenrir + cheat databases (.cht/.pat) |
| PS2 / GameCube / Xbox / Wii | Very rare | **Yes** (AR Max, AR DS, Gecko OS, Nintendont) | OPL (PS2), Nintendont (Wii/Wii U), Swiss (GC) + .gct/.pnach files |
| PS3 / PS4 / PS5 / Xbox 360 / One / Series / Switch | Almost none (dev menus removed) | Hardware devices **don't exist** (encrypted bootloaders) | CFW / HEN / Homebrew: PS3 (webMAN, Artemis), PS4/5 (GoldHEN + .mc4), Switch (Atmosphere + EdiZon/ReverseNX), Xbox 360 (RGH/JTAG + Aurora/FSD), 3DS (Luma + Rosalina/Checkpoint) |
| PC (Steam/Epic/GOG) | Console commands, trainers, mods | Never | WeMod, Cheat Engine, FLiNG trainers, Nexus Mods, CreamAPI (DLC unlock) |
Bottom Line: On modern systems, you don't buy "Action Replay"—you install **Custom Firmware / Homebrew** and use **open-source cheat managers**. On PC, use **Cheat Engine / WeMod**. On retro, use **Flashcarts / ODEs** with cheat databases.