Dead Rising understands an important fact about zombies that most other zombie games forget, deny, or ignore. Zombies make boring bad guys.
I only beat Dead Rising: Case Zero on my third attempt. In Case Zero, Chuck Green and his zombie-bitten daughter, Katey, get stranded in a small town overrun by the undead. In 12 hours, the military will arrive to wipe them all out, and in that time, Chuck must get Katey a dose of Zombrex to stop her from turning zombie and build a motorcycle to escape the small town.
Zombies play a big role in Dead Rising, but they’re not your main antagonist, which is a good thing because by themselves zombies are boring. They’re slow, stupid, and easy to kill. They may be disgusting, but they’re not particularly scary unless they’re in a horde. The two most popular zombie games, Resident Evil and Left 4 Dead, use zombies as a starting point for horror.