OMG! That Space Invaders video was so funny! I had to watch all of them and I liked Tetris best. Brought back memories...
From an aesthetic perspective, I think the choice to use a human voice to recreate the sounds of the game was a great touch. It adds a whole different layer of whimsy to it.
My favorite moment: When the cat is licking the rat, as the rat is licking the cat. That's ridiculous and awesome at the same time.
I wish my cat got along with the rats to let one of them do that, and the dog got alone with both to let that happen. But alas, there is much cruelty to others in the world of my pets...