The original Waptrick is dead. Current sites using the "Waptrick" name are honeypots for malware. Downloading a .jar or .jad file from these sites on a modern Android phone is a fast track to ransomware, SMS toll fraud, or adware that you cannot uninstall.
Search for "Peter Jackson’s King Kong J2ME ROM" and run it via J2ME Loader on Android. If you want to stay safe: Do not type "Waptrick" into your browser. The nostalgia is not worth the malware. Waptrick Download Games King Kong
Even if you find a clean file, your iPhone or Android 14 cannot natively run Java (J2ME) games. You would need an emulator like J2ME Loader . While that works, the tactile experience of pressing physical number keys (2 for up, 5 to shoot) is lost on a glass touchscreen. The original Waptrick is dead