Operation Z.E.R.O. Outnumbuh'd

Operation Z.E.R.O. Outnumbuh'd places you in the Codename: Kids Next Door universe, drawing inspiration from the Cartoon Network film Operation: Z.E.R.O..

Take on the role of Numbuh 1 as he embarks on a risky mission to infiltrate the Moonbase, currently controlled by hostile Senior Citizombies. Your task is to defeat the undead forces led by Grandfather and restore the Moonbase's former inhabitants.

This game brings together well-known Kids Next Door characters and offers a blend of action and tactical encounters against zombie enemies, set within a nostalgic storyline.

Use the directional keys to guide Numbuh 1 around the Moonbase in Operation Z.E.R.O. Outnumbuh'd.

• Press Z to fire a stun gun that temporarily incapacitates Senior Citizombies.
• Hit X to launch age-atonic grenades which convert zombified operatives back to normal humans. These grenades require a cooldown after use, so timing is crucial.
• If a zombie grabs Numbuh 1, rapidly press left and right arrow keys to break free.

The game features multiple stages filled with Senior Citizombies that must be defeated to advance. Some levels include bonus rooms where you revive zombified hamsters to power entry doors for progression.

Boss encounters include:

• At level 10, face Toiletnator, who attacks with toilet paper. Use grenades to inflict significant damage, as they are more powerful than the stun gun in this battle.
• The final battle is against Numbuh 362, who attacks with a staff and tornado moves. Grenades are essential here because of their wider effect compared to the stun gun.

Finishing the game unlocks a unique clip showing Sector V in a zombified state during Numbuh 1's mission on the Moonbase.