"The Sea Wall is a unique defensive structure found only on the "Walls of Constantinople" level of the Attila the Hun campaign in Age of Empires II. It also appears in the final Attila the Hun mission in the game, together with its counterpart, the Sea Gate. It is very similar in appearance to Palisade Wall. It is found to the north of Constantinople, in the harbour, and defends the city from seafaring vessels.
The Sea Wall is not available in the Scenario Editor by default, but can be unlocked using GenieEd or another DAT editor." - Age of Empires Wikia
Ok, here's how what you need to do to be able to build Sea Wall and Sea Gate in Aoe 2 Scenario Editor:
Simple Way:
- Download this file: Empires2_x1_p1.dat
-Save it into C:\Program Files\Microsoft Games\Age of Empires II\Data (if default path), remember to backup older file.
Full Way:
- Download Advanced Genie Editor http://aok.heavengames.com/blacksmith/showfile.php?fileid=11002
- Open AdvancedGenieEditor, switch to tab 'TC Default' or browse to correct files if you installed in different path, click Ok
- Go to Unit tab
- Find Sea Wall, Sea Gate on the list
- Click and drag to select all of them
- On the big menu to the right with many numbers, scroll down until you find the line: 'Hide in editor'
- Uncheck the box next to it. You can select all the list and do the same if you want to access to everything possible in Scenario Editor.
- Click Save (the gate on the top left). Still remember to backup original file.
