
Happy Z-Day
Today is supposed to be your daughter's birthday, But something happened in this town. Almost everyone has turn into a Monster. You need to protect your daughter and her birthday party!
Developer
Publisher
Release
May 3, 2021
5 years and 92 days ago
Steam Reviews
6 user reviews6 reviews100.0%
Does this feel indie?
Vote based on whether this game feels indie to you. You can change your vote at any time. Results earn an IGF score after 10 accepted votes.No votes yet
Game contextLatest: IGF Team
| ContextThe evidence factors used to assess whether this game belongs on IndieGame.Fan. | Status | Notes Latest Contributor: IGF TeamEdit notes |
|---|---|---|
Updated: Jul 14, 2026Developer scaleThe operating scale of the game's developer. | ||
Updated: Jul 14, 2026Publisher scaleThe operating scale of the game's publisher. | ||
Updated: Jul 14, 2026Publisher statusHow the game's publishing relationship is classified. | ||
Updated: Jul 14, 2026Creative controlWho appears to retain creative control of the game. | ||
Updated: Jul 14, 2026Release statusWhether and how the game has been released. |
Media
12 itemsAbout the Game
Story
Today is supposed to be your daughter's birthday, But something happened in this town. Almost everyone has turn into a Monster.You need to protect your daughter and her birthday party!

Gameplay
Happy Z-Day brings you a challenging Top-Down Shooting, Tower-Defense-Like gameplay.You need to wisely use your resources to Construct Buildings, Upgrade Equipment or Resupply Ammos. And defend in-come waves of Zombies!
Game World
The Game take place in a House or a Farm with a barn, or even on the roof. Depends on the levels.
Enemy
The enemies you need to fight is those who got infected by the virus and turn into Zombies.Each type of Zombies has different behaviors.
Some type of Zombies will get raged when it's night.

Goal
The Goal is to survive specific number of nights, then your daughter can finally celebrate her birthday.If you die, or your daughter's birthday party got destroyed, you will Lose!