Very early access beta, download for a snippet of the mod foundation
INSTRUCTIONS
Place the "startpos.esf" and "scripting.lua" file in
"Steam > steamapps > common > Empire Total War > data > campaigns > main"
Place the pack files "etfww_ui, etfww_text, etfww_main, etfww_graphics" in
"Steam > steamapps > common > Empire Total War > data"