Ensure your ROM matches the cheat database. Many databases are built for "No-Intro" sets. If you are using a "romhack" or a patched translation, standard cheats likely won't work because the file structure has been modified. Use the "Manual Entry" Workaround
If your favorite Game Genie codes or Action Replay cheats have suddenly stopped working, you aren't alone. Here is a deep dive into what is actually happening behind the scenes and how you can get your shortcuts back. Did Lemuroid Actually "Patch" Cheats? lemuroid cheats patched