The arcade doesn't have parallax scrolling because it is not as powerful as the mighty Sega Genesis 16-Bit Video Entertainment System you crazy mofos! They really tried to accomplish this in the arcade, but when they did the machine just kept blowing fuses so they had to take it out. Only the Genesis is powerful enough to not blow a fuse (it uses a 17watt AC Adaptor... power beyond comprehension). Oh my god the parallax in Altered Beast is sooo awesome. If you haven't seen it yet, prepare to be amazed. I was paralyzed for 3 days when I first saw it because the awesomeness is overwhelming.