The Last Stand is an addon project for the Sins of a Solar Empire, aiming to provide additional and original content, depth and challenge to the game, including three new races, new gameplay elements and tactical gadgets such as mines, interdiction abilities, deployable starbases, new ship classes and more.
A merge-friendly version of the Volumetric Explosions mini-mod, to be used with existing mod installs. See readme for more info.
Is this compatible with 1.13?
No, you should use the ver 1.0 available from the download section.