The Simplebet was invented by Kim Godgul in 2008 as a simple alternative alphabet for writing English. The letters only have one case and the shapes are simpler than the Latin ones.
More information about Kim Godgul's alphabets (in Korean)
http://chogul.tistory.com/
Baal, ColorHoney / ColorTokki, Geup-Simhangul, Godgul, Hal, Rohal, Sacgul, Simplebet