Copy the entire folder of your downloaded engine version (e.g., a folder named ce-5.7.0 ) onto a high-capacity external hard drive or USB flash drive.
Install the on a machine with internet access. cryengine offline installer
Because you are bypassing the launcher's pre-compiled binaries, you will need to generate the project solution files using CMake and compile the engine locally. Open on the offline machine. Copy the entire folder of your downloaded engine version (e