In the beginning is an empty room with little people (white boxes) in it. The poisonous gas starts to flow downward from the top. The people start running from the gas (red boxes) when they smell it. They die after some time (black boxes). You build additional walls to manipulate the gas. By manipulating the gas, you can poison people differently, and make them flee to different directions. The control is somewhat indirect. This can be the level editor, or it can rather be the gameplay itself.

As you can see, this is still a toy. When it becomes a game with a backstory, you’ll probably have to kill some guys and rescue others. There’ll be some sound and graphics too, hopefully.

You can test and comment on the prototype:
Download fidaner-LD14-prototype1 (Windows)

Keys:
Enter – Restart
LMB – Put wall
RMB – Delete wall
MMB – Put agent

I’m open to new ideas too.