My friend uses the GOG version of Empire Earth.

I use the Retail CD version of Empire Earth.

Will our 2 different versions of Empire Earth be compatible multiplayer?

Say using LAN (Local Area Network) or Game Ranger.

I need to know if we can both play a multiplayer game together without issues.

Found out the GOG's version doesn't work with Game Ranger. Both me and my friend have the Retail CD versions installed now.