"For A Change" isn't actually in a different language - it uses regular English words, but in an extremely stylized manner. The gameplay itself is rather simple; the charm of the game comes from watching the way the author uses language, and figuring out the rules of the strange world you find yourself in.
There are a few issues with implementation: one or two times I figured out what I had to do but the game wouldn't accept my phrasing. But these are only minor problems, and didn't interfere much with my enjoyment of the game. All in all it's an excellent and truly unique experiment.