NAVE - video game arcade machine

Now this is seriously awesome, two guys in Argentina have designed and built a wicked shoot em up arcade machine, straight from scratch. The video pulled me right in and made me feel as if I was that arcade gamer, smashing away at the buttons for a high score, just like my golden retro days. But what is this game they are playing? It's NAVE! A shoot em up that will turn your piddly little ship into a massive beast of a mother ship the longer you survive.