My entry for the 21st BGMC is “Pipe-Pipe”.
The objective is to connect pipes in order to guide the “polluted” sewer water to the treatment station to prevent it from touching clean water. If you pollute clean water, it’s Game Over.
Gameplay:
Download (.zip, .blend 2.77):
https://drive.google.com/file/d/0B4Q7HeW7vYDIU1JfSjVja0JrWU0/view?usp=sharing
Don’t forget to read “README.txt” =)