Is Zeit pure Zeitgeist?
Here is a snippet:
"Lack of story aside Zeit² brings a lot to the table. Numerous mechanics litter the game layered on top of the usual avoid/shoot gameplay of similar titles. Most striking among these is the time manipulation, which allows time to be fast forwarded or reversed using the trigger buttons. While the forward power is primarily used just to amass extra points (scores are higher when time is accelerated) the reverse ability introduces a great deal more and is essential to successfully navigate the game."