Hello!
The EGL will install the prerequisites as part of its installation but you should not rely on it for your title. The best solution is to add the prerequisites part of the game package. If you are packaging from the editor, you can check the “Include app-local prerequisites” project setting. The editor will generate the proper argument when it issues the call to BuildCookRun.
If you are packaging from a build machine, you can add the following to the BuildCoorRun command line: -applocaldirectory=$(EngineDir)/Binaries/ThirdParty/AppLocalDependencies
Regards