I'm still new to the whole post EA hosting C&C thing and I noticed when I asked how to open mods no one really knew and some said it's not possible with Origin version of the games anymore. So heres how you do it.(Haven't tested it online yet, but does work with C&C:Online Launcher.). This tutorial doesn't include how to install mods.So the main issue is that Origin version doesn't include the Launcher that retail/steam version do, so what someone did is just make the Origin version like the steam version and it works completely fine.You will need the following files and have to install them.
One is a registry editor. Don't worry it's safe to use.Step 1: Download & Install:Registy Editor:Launchers:Step 2: Add command to Origin titlesOpen Origin. Right click on the desired game (RA3/C&C3). Open 'Game Properties'. Open 'ADVANCED LAUNCH OPTIONS'.Type the following in and hit 'Save'-uiStep 3: Launch the game through OriginAs I expect you already have your RA3/C&C3 hooked with the C&C:Online Launcher. Just open the game up as usual and your launcher will open.Step 4: Open 'Game Browser' in launcher and playI will test the multiplayer tomorrow.