The objective of the game is to discover and kill the aliens hiding among the common people, using a wave gun that destroys their ability to cloak themselves.

Controls:
Left-click and Left Shift fire a bullet.
Right-click and Space fire a "wave" that can be used to discover which citizens are aliens in disguise.
WASD or the arrow keys can be used to move your character.
F1 takes a screenshot.
Escape quits the game.

Currently having trouble compiling on Mac OS X, but I'll see if I can get a Windows version working.
Update(1): Finally got it to compile on Mac OS X. Turns out I needed to tell it to include the images when building the app.
Update(2): Got a build for Windows now. Every bit as buggy as the Mac build, but at least they both work. If time allows I'll make a debugged Jam version.
Update(3): Uploading debugged Mac and Windows versions for the Jam.
Update(4): The Windows version is uploaded. Took way longer than the Mac version because things had to be changed (like the networking wasn't working at all, and some classes work differently). I see now why cross-platform support can be difficult.