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My Little Hero

'My Little Hero' is a digital game designed to facilitate communications between long-term hospitalized children's family members. It encourages all family members to play with the child and help them make progress in the game. The game's story was designed to help children and their family members understand the interactions between diseases and the immune system.


Long-Term Hospitalized Children


UX research


Family Engagement


Personal Project

My contribution

UX research, UI design, Illustration


3.2017 - 5.2017

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What inspired this project

I heard a story from my friend about how long-term hospitalization made her disconnected from the family when she was a child. She said long-term hospitalization makes the child lose connection with people outside of the hospital. It makes it difficult to have a common interest that the child can share with other family members. I decided to design an app that can connect families with long-term hospitalized children.

App Summary


If a child is hospitalized for a long time, communication between the family members becomes lacking and distant.


When the child is hospitalized for a long time, the family is divided into two groups. One group stays in the hospital to take care of the child, and the other group has a normal life. The difference between the two groups grows as the hospitalized term gets longer. It is a result of a separation between the two. In many cases, this is traumatic for the child. It can remain even after they are discharged from the hospital. 


I wanted to encourage communication between family members and to create a shared topics that can facilitate conversations. In the game, the child becomes an immune cell character and explores the body. Other members also become immune cells or DNA and help the child's character to overcome the disease in the game. It allows the child and family members to understand the immune system and build healthy habits. 


Communications between family can prevent trauma that can be caused by disconnection. Also, the child can build healthy habits through the game. 


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Problems caused from child's long-term hospitalization

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Separation of family

The family is divided into a nursing family and a family that has a normal life, resulting in a separation between the two.

Lack of stimulation through play

Although childhood needs a variety of stimuli, it is difficult to play in hospitals.

A lack of understanding of disease

The child did not understand why his body was sick or how the organs of his body work. Due to this, the treatment process was more difficult and painful. Young siblings were also jealous or harassed without understanding why sick siblings were hospitalized.

Service Summary
Design Insights

Design Insights

Digital Solution to Connect family

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A family is divided into two groups—one that belongs to the hospital and the other that belong to everyday life. As the hospitalization gets longer, they become to have a less common background to share. 

"Let's make a family game that all family members can enjoy and can share common subjects."

Design Idea

1. Increase Self Confidence by Using the 'Hero's Journey' Structure

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Structure of the hero myth

The child fighting with germs and becoming healthy seemed similar to the process of an ordinary character becoming a hero in the hero's myth story. Therefore, I decided to use the structure of the 'Hero's Journey'. 


1. Fun

The hero myth structure has long been an interesting organization for readers. The structure helps to keep readers interested in the story.

2. Recovering self-esteem

Through the process of becoming a hero, the child overcomes the feeling of helplessness and restores confidence.

2. Understanding How the Body Works 


Become an immune cell in the game

The child explores the whole body by becoming an immune cell in the game. The character fights with germs, and meets other helpful immune cells.


Understanding the body

Children and their families can naturally learn about the body's immune system and about organs. It helps children to understand the treatment they get at the hospital.


3. Family send Quest to Each Other to Entertain and Acquire Healthy Habits









Sing a Song to father! He will approve that you finished the quest!



To win from the fight with the cold germ, you have to get a ginger tea! Ask for help to sister. 


By singing a song to the father, they can have a family bond and the father helps the child's gameplay by approving the quest. A child can get a feeling of being supported by the family.


By sending a quest related to a healthy lifestyle, a child can learn about healthy habits while playing the game.

4. Receiving Support

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A family member has the role of the supporter in the game.

They collaborate whenever they meet germs in the game to solve the problems by collaboration, they can finish the game and win the fight


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Digital game that the whole family can play together and understand the child's diseases and circumstances

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Parents can participate in their daily lives because their roles are helper and supporter; their part is made of easy tasks like approving child's requests or playing a mini-game. 



Concept Sketch

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Sketch of one of the mini games

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Early Character designs for immune cells

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Sketch of background map of the game

Based on the scientific facts, I designed immune cells based on their function in the body. For example, Macrophage that eats germs are drawn as a chubby character that likes eating (Top Left)

Character Design

Main Character, Immune cells, DNA, Neuron characters

The hospitalized child becomes the main character (Top Left) and becomes the game's main immune cell (Bottom Left). Parents become DNA, and siblings can choose immune cells that they want to be except the main immune cell. 

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Mood Board

To deliver the feeling of being inside of the body, I set the main color as red. The characters are designed in a simple style to appeal to children.

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Final Design

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How to play

How to play

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Immune cell


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The hospitalized child can play the game with the participation of family members and helps. Each member has a role in the game. The child who is in the hospital is an immune cell who will later be a hero of the body and make the whole body healthy. One of the parents who stays with the child will be a mentor during the game. The remaining parents and siblings become other cells from the body, such as a neuron. 

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Child in the hospital

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Start the game

The child starts the game and defines his or her hero character.

Meet the germ

Once he or she starts the game they meet a germ in the body and they have to fight with germs with help of supporters.

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The help of the mentor

Whenever the hero character meets
the germ, DNA cell (which is one of the parents) give advice on how to defeat the germ. DNA cell gives quests to get the ingredients to fight with the germ. The child can send the quest to other family members: another parent who is at work or siblings. 

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Finish the task

When all the ingredients are collected, the caregiver staying in hospital with the child approves the finish of the quest and the hero can defeat the germ and go to the next level.

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Caregiver in the hospital

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Sing a song to father

Parent who is not at the hospital as a caregiver receives the quest and gives a task of recording songs. The parent can hear the voice of the child and child can sing a song to the parent so they can have bonding moments.

The child plays a mini game

Once the parent recieves the recording, the child gets a chance to play a mini game to finish the quest.

Caregiver outside of the hospital

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Mini game

Sibling will play mini game to collect honey for his or her sibling at the hospital.

Sibling outside

of the hospital

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