Now if someone would only explain it. From what I can determine four things are flowing down onto the spinning blobby item. Clicking other items and drawing effect the size of spinning blobby. 
Try drawing a line across the screen. It’s like a cyber-sand sculpture.
I found this description:
If you drop salt on the blob, it will shrink and eventually explode, damaging whatever lines you have drawn.
If you draw plants under the water, they will grow. And falling sand will eventually erode any lines you’ve drawn under it.
The fire, plant and spout interact with the different streams in different ways, too.
Fire bad!
The blob of sand is apparently called Namekuji. You can stop him, make him go or turn him off completely. You can also adjust the flow rates of the four substances as well as adjust the speed of the game time.
Fire not always bad. Food poisoning bad! 
Oh, and whatever you do, don’t use the mystery tool marked “???” :eek:
If you grow a plant, it will consume any water it touches and grow accordingly.
What does the ??? do?
Perhaps it’s like the bid, red, shiny, candy-colored button in Ren & Stimpy :eek:
it’s a “big” button. :smack:
Very, very addictive. Cool link. 
I wish I had a ??? button for real life.
Fascinating and somewhat relaxing. Thanks much
Whatever “Cera” means, it puts up an apparently wooden wall (it burns when fire touches it).
“Cera”, or so I am told, is latin for “Wax” which explains why it burns.
Also, the spinning blobby thing’s name is translated as “Slug”, which explains the effect of salt upon it.
I was thinking of the kid from Arrested Development. This makes more sense.
Hey. Oil burns good! Go figure.