Here's a couple recent ones:

Game I made for the Library of Congress' Game Challenge this year. Combination of a match-3 game, and a society simulation, such as the Civilization series. Part I thought was neat was Tetris style swap powers you earn with trominos and tetraminos, as well as pentaminos for structure criteria. Note: LoC wanted "simple, easy to start"

http://www.forsako.rf.gd/AmericanCities/LibOfCongressGame.ht...

Spherical planetary erosion (quick gif, video's on Twitter, I just left after the strobing X on the roof episode.)

https://i.imgur.com/ry7s6JY.gif

Least squares curve fitting with semi-arbitrary equation matching and visual points you can move.

http://forsako.rf.gd/JAMA4JS/JAMA_Test_Visual.html