1. Installation - Mobbstar/InvisibleInc-MoreMissions GitHub Wiki
This mod will eventually be released on the Steam Workshop ("when it's done"). Until then, you'll need to install manually.
First, check that you have prerequisites. This mod requires Sim Constructor by Cyberboy2000, Function Library by wodzu_93, Community Bug Fixes, and the Contingency Plan DLC. You can download them by Subscribing to them on Steam or, if you don't have Steam, using the Steam Workshop Downloader.
From the main page, download the rar file under Releases.
Move the rar file to your Mods folder (in the Invisible Inc install directory). Right-click on the rar file and "unzip here". A folder named MoreMissions should appear. You can delete the rar file now.
If you go inside, you should find .kwad files, a modinfo.txt file, and a scripts.zip file. This means that the mod has the correct file structure to appear in the game. You can now enable it in your next campaign. To update the mod, delete the MoreMissions folder and repeat these steps.
This mod will become available on Steam once it is finished, making installation and updating easier.