A darker chapter of this story involves "fake" APK files found on third-party websites. Many sites claim to offer a "GTA 1 Android Port," but these are often scams or contain malware . Experienced users avoid these, as they are often just the original PC files wrapped in a non-functional installer.
Because these are third-party APKs, you must disable "Play Protect" temporarily or only download from trusted GitHub repositories (check the GTAForums.com for the official MrBoom thread). Scan any APK with VirusTotal before install. Download Gta 1 For Android