This is an indie game i'm pretty excited about. Else { Heart.break() } is a game where the player has to modify the source code to "change reality."
While the premise has the potential to be very infuriating to the causal gamer, the developer has claimed that Else {Heart.break()} assumes no previous programming background. Hopefully this will remove the staggering amount of presumptions Meta-games are prone to. Heart.break looks delightfully swedish and experimental.
In the meantime, if you're looking for a nice meta-game to fill the time, I recommend Not Pr0n. It's a browser based puzzle game that will blow you mind.