Warks chapter on battle and in particular was more straight forward and simple then the other chapters.  His references to the game Rez peaked my interest and after playing it I can say that it is one of the most refreshing gaming experiences I have had in a while.  I would totally agree with Wark on the idea that Rez is not about shooting so much as it is about targeting.  The lock on feature makes the player concentrate specifically on highlighting the targets and then once they are all selected you simply release the button and the targets are destroyed.  You could argue that there is a certain amount of violence because of the explosion animation when a target is destroyed but the setting of the game being inside a computer along with the vector graphic style helps to set the feel of the game apart from all other violent shooter type games.  Mover over after playing for a while and looking closely at the player model and his actions you can see that he has no gun or any other type of weapon in his hands and when you do shoot something the rays come out of his head as if to illustrate the visual connection of targeting.  It very much reminds me of the laser vision a super hero might have.
Visually Rez is a very pretty game and especially when you consider that it came out in 2001 for the Sega Dreamcast.  The levels become more interesting the more you play or even just watch as someone else plays.  You begin to appreciate the environments and the world monuments that you travel through like the pyramids.  The whole feel of the worlds is very reminiscent of the movie Tron.  The combination of the visuals and the intense techno music that is in sync with the game and affected by how well you are playing begins to transform the game into more of a interactive performance piece that just a game.