Excerpt: The shoot em up game of my youth had to be the arcade version of House of the Dead, produced by Sega. This game was a first person shooter and armed with a light gun you had to shoot all the zombies as they appeared (some slowly strolled up from the distance, whereas others would appear by jumping out in front of you) and leave the House of the Dead alive. The original game was a fast paced blood bath that anyone could play.
Pros: None worthy of mention
Cons: Repetitive game play, limited number of bad guys, gets boring