NASA Interactive Game

Okay, so I'm kind of a space nerd.  I've always wished I could have been an astronaut.  I'm sure the fact that I get motion sickness even on my hammock would not have held me back.
It just fascinates me to think of people being in space and even walking on the moon (showing my age).
So here's a great interactive game from NASA that I will most certainly be playing.  I know kids would love it.  The only problem with it is there is no Mac version.  Seriously, NASA?

Moon Base Alpha