EBURP

EBURP , stylized E.B.U.R.P is short for Eight-Bit Universal Role Playing Engine. It was made by Larva Labs, creators of the Gurk series.
EBURP is an engine made to make developing simple RPG games easier. A notable example of a game made using it is Gurk III.
EBURP is written in CoffeeScript, meaning that it can run on nearly any platform that supports HTML5, including Android and iOS.
A demo game made using EBURP is available here.