Yes, version 0.2 could be useful to build simple games ( and more complex like Starcleaner, Fuzzy and BackToThePast curiously three platforms.
As news you can found in development version of MarteEngine on github (named version 0.3). Stef569 (with some help of mine and Tommy) are helping in testing, solving issues and polish all. Objective is stable Marte Engine version 0.3.
Work done is a lot, as you can see from github network graph:
For more information see MarteEngine Github and for newbie MarteEngine wiki