This was done for GrayScaleGorilla's 5sec project challange, under the "Old Computer Game" theme.
You can find more info about it here:
It's really about experimentig new techniques, in this case Maya's nParticles - the surface and the explosion was generated by these animation tools.
Also scripted the setup to animate the landscape and everithing like it was a true pixel world - so they always move exact units away.
Considering concept design I found it interesting to transfer a 2D pixel space into 3D - which my offer a lot of gags to play with...
Hope you will like it!