Ye Olde CN Games - Codename Kids Next Door: Operation Z.E.R.O. Outnumbuh'd!

Don’t think I ever completed this

This was my favorite KND flash game.

I swear, even as a teenager I literally never made it past the Toilenator.

I played that game too and saw the movie, when I was a kid. This game was very good, but they could have added Grandfather too in that game. Or made another bonus Operation Zero KND action game, where we must save the kids from these scary and horrible tapioca factories and shoot evil Grandfather. He was the main and the best scary villain in KND. I liked Grandfather as a villain. 😉

There were times when this game freaked me out beyond all reason as a kid because I used to HATE anything to do with zombies. During those times, I had a strategy where I’d just let the whole room fill up with zombies and let them trail behind me so that the ageatomic grenade would have more of a “wide dispersal” effect. However, I honestly never understood the hamster rooms. I thought the point was defeating all the hamsters but I guess now it’s just a test of endurance

Damn, talk about a blast to the past.

Oh my god at what had happened to Hoagie, Kuki, Wallabee and Abigail.

I played this game before I ever watched the movie. The end cutscene confused me a lot since I was wondering why Number 1 didn't just throw an Ace-Tonic grenade at them like he has done with all the other Senior Citi-Zombies that he's just cleared through.

KND

Damn used to play this game alot when I was a kid.

Otro juego que complementa una parte de la historia de la película, aunque para mi en vez de 1 es el sector Z destrozando a todo agente Zombie... Ademas de que la granada rejuvenecedora eran como los trajes de cumpleaños "arreglados"

KND is the best

I remember playing this with my brother a lot when we were kids. We were at a high level but we couldn’t make it to the final boss. And who would’ve thought numbah 362 would fight like Kiba

Dear lord this takes me back.

This game actually scared me as a kid bcuz I really didn't wanna be old n wrinkly lol

Z 🧟‍♂️

The game over screen was the only time anybody got to see the Senior Citizombie version of Numbuh 1 and the message was pretty good. "Don't give up! You're too young to retire now!"

Too Bad They Didn't Use Grandfather as the Final Boss. He Would be Perfect.

I had no idea that this was seemingly inspired by the SNES game Smash TV. The gameplay is uncannily similar.

Those senior citizombies are as scary looking as the duel ghouls from Yu-Gi-Oh! GX.

oh man, i remember this game. ahh, good memories of getting comboed by the zombie hamsters and not being able to pass the first level.

Man I remember when I first played this I do not know how to turn the senior cityzombies back into normal... It was good times I could not pass the first level