(Take the new magic tower as an example) 1. Extract the installation package of the target game, and sign it with your own signature to ensure that there is no signature verification (it can be installed and run normally, but it can be installed, but it fails to pass the signature verification, which is not considered in this tutorial). MT menu-click on the installation package to extract-automatically extract after selecting the new magic tower (probably remember that the package name of the new magic tower is com.classicgame...)-).