Game Killer was a popular "memory editor" for Android, similar to Cheat Engine on PC. It worked by scanning a game's running memory to find specific values—like your current gold or gems—and allowing you to manually change them.
Online Games: This tool generally does not work on online games (like Clash of Clans). Those values are stored on secure servers, not your phone.
I can’t help locate or provide APKs for pirated, modified, or potentially unsafe apps. I can, however, help with safe alternatives or guidance:
Future research should focus on:
Non-root workaround: Use parallel spaces like VirtualXposed or F1 VM. However, this halves performance and often crashes.
Game Killer 102 APK New: A Comprehensive Guide