
I've had this concept sitting on my computer since 2012 and don't think I ever shared it with the FB community.
It is a heightmap terrain generator demo, combined with a water demo.
SPACE = New terrain
N + SPACE = New terrain type 2
M + SPACE = New terrain type 3
B = Blur terrain
UP = Raise water level
DOWN = Drop water level
S = Show heightmap buffer
T = Show water buffer
LMB = Play with water
RMB = Draw terrain (pure testing mode here, it isn't lined up with the mouse at all, lol)
Unfortunately, for Windows only, and I am keeping the source to myself due to its awesomeness ;)
http://www.bazosoft.com/_files/map_gen_test.zip
Enjoy and Happy New Year to you all!