By typing 'LevelEditor();' into the console (activated with the '`' key) you can open the level editor. Otherwise you can access it when challenging an opponant. From there you can regenerate the level, move people round, change weapons. You can also load and save levels, which includes the ability to load/generate maps from an image file.
There's no cloud saving in Steam, so if you want to transfer your single-player campaign progress to another computer / OS you can simply grab all the files titled spSave*.* from:
Sound on Linux didn't work for me untill I installed the 32-bit version of libopenal (lib32-openal), and symlinked to it from the Frozen Synapse directory. FS is looking for the file 'libopenal.so' in its own directory, so you need to point it to that.
In my case the file was: /user/lib32/libopenal.so.1.17.2 but other examples online are simply libopenal.so or libopenal.so.1
You can symlink from the Frozen Synapse directory with: sudo ln -s /usr/lib32/libopenal.so.1.17.2 libopenal.so
A version of Frozen Synapse with more details graphics (to my eye they're much harder to read1)), and a simplified command menu. It seems like Frozen Synapse 2 steps back from all these changes.
Frozen Cortex is a sport game with a similar structure, somewhat like gridiron without yardage, or rugby which allows forward passing. Moves are planned in a similarly intricate manner.
COMING SOON !!
Features a procedurally generated city, and you can pick any part of it to run a mission in. New units include smoke grenade guy, gas grenade guy, flamethrower guy, and maybe close combat guy.
Not sure how multiplayer changes beyond that.