OK so I searched for this one and didn't find it. I don't play much games on my ipad, actually I have none, zero installed. But I'm a huge old school fan of DOOM and thought it might be a blast on the ipad. I see in the appstore that it's not HD. Anyone else buy and play DOOM on their ipad care to comment how it looks? How does it control? How are the other ID software non-HD games on the ipad?