Formations might cause a problem (think they need to be stored on the server?) but I dont think the rest will be any problem.
Of course, experts, correct me if I'm wrong.
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The Unofficial Space Empires 4 Mod Utility V1.6
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Download as a .ZIP <
HERE>
Download as a .RAR <
HERE>
Download as a .ACE <
HERE>
Check a Screenshot of it<
HERE>
Check an Alpha Shot of my Mod Editor (Unreleased) <
HERE>