“When we first saw Chop Till You Drop in action, there were a few zombies shuffling about onscreen, and we assumed that was the most we were going to get. Capcom’s been working to address the zombie-less zombie game issue, and the undead count has increased considerably since then. Currently the number doesn’t look quite like the hundred Capcom was aiming for, but it’s still a lot – enough to make running through the mall to rescue people feel hazardous, at least. – Nintendo Power
Honestly, I’m not surprised that the developers were unable to add in 100 zombies at once. It’s actually not a big deal for me personally – if the game plays decently, I won’t mind. Besides, if Nintendo Power claims that there are “still a lot” of zombies, that’s enough for me.