The Strategic Assault mapeditor is out, get it from
To load add-on maps you will need to update to the latest version of the program which can be downloaded from (and only from there at the moment)
To install add-on maps into the game put them in:
\Program Files\Strategic Assault\Forest Fire\Extra\
You will need the full version of the game and Forest Fire.
I hope people will contribute maps to the game, and when we have some there will be a page for them on the Xen Games website for everyone to benefit from, and the author will be credited.
Thanks!