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Happy Z-Day

Also known as Happy Z-Day, happy z day, 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!

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Last update
20 May 2026
Players now
0

Latest update

Announcement

v1.0.1Update 1.0.1.1 - New Buildings & Weapons !!

Update - 1.0.1.1 Hello everyone, A new Update is now Live!! This update brings new content and some bug fixes. --------------------------------------------------------------------------------------------------------- He…

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Update history

Browse past updates and patch notes for this game.

6 updates

Gallery

In-game media

Achievements

Community progression

Top picks from 16 Steam achievements, sorted by player unlock rates.

  • First BloodKill 1 enemies in the game.88.2%
  • A Good StartBuild any of buildings in the game.85.3%
  • Slaughter IKill 50 enemies in the game.60.4%
  • Stronghold IBuild 10 buildings in the game.44.3%
  • Slaughter IIKill 250 enemies in the game.42.4%
  • Survivor I - HouseSurvive 7 nights in the "House" map.33.1%