Quest guide

The Most Epic Prank Ever

It's Badtz-maru's birthday, and there's only one way to celebrate that...

Before you start ↓Objectives ↓Items at a glance ↓

Quest reference · objectives and linked items from the game. Puzzle walkthroughs and some locations are still being added.

Start with this objectiveTalk to Badtz-maruUse your in-game quest log if it shows a different active objective.

Go to step 1 ↓

Before you start

Badtz-maru, Hello Kitty, Kuromi, Keroppi must be free from conflicting quests.
Meet Badtz-maru.
Meet Keroppi.
Meet Kuromi.
An additional game-progress condition is not yet explained in this guide.
Open the Nature Preserve must be complete.Open the Nature PreserveOpen this quest’s requirements →

When this quest appears

All of these:

An additional game-progress condition is not yet explained in this guide.
Meet Badtz-maru.

What you receive

Given during the quest

Some gifts depend on your progress or dialogue choices.

Your quest kit

See the items before you start

6 items in the objectives

Some items are made or found during the quest. Each quantity belongs to the step shown. The same item can appear in more than one step.

Step 3× 3
Step 4× 3

Step 6× 10

Step 8× 1

Step 8× 1

Step 8× 1

Step 8× 1

Your objectives

0 / 9 checked

Optional checklist saved in this browser. Some objectives happen together; follow the active objective in your game.

Talk to Badtz-maru
Talk to Kuromi
Catch 3x Lily Frogs
- Collect: x3
Give Kuromi 3x Lily Frogs
- Give Kuromi:
Talk to Keroppi
Get Keroppi supplies to make his comic for Badtz-maru
- Give Keroppi: x10
- Give Keroppi: a Badtz-maru Comic
- Give Keroppi: a Froggy Power Comic
Talk to Hello Kitty
Give Hello Kitty Pizzas to Inspire Badtz-maru's Cake
- Give Hello Kitty:
- Give Hello Kitty:
- Give Hello Kitty:
- Give Hello Kitty:
Go and talk to Badtz-maru
- Talk to Badtz-maru

Sources & guide coverage

Objectives, item requirements and condition relationships were read from original Steam 3.0.1 game data. This is a quest reference, not yet a screenshot walkthrough of every puzzle. Maps appear beside objectives with verified location references. Other locations, scripted gifts and hidden progress conditions may need further review. An empty completion list does not mean the quest gives no rewards.

Community cross-check

The quest’s public availability was also checked against the community wiki. These additional statements come from that page, not independent native verification:

Available only during Badtz-maru's Birthday Celebration (in late March to early April) annually
Complete: Open the Nature Preserve