Table 1. The videogame levels, symptoms and concerns, and details about the game.

Levels	Symptom or health concern	Symptom management strategies/behaviours (game activity)	Game mechanism*	Feedback/important message for children
Level 1	Mucositis	Perform oral care by toothbrushing and protect oral cavity.	The player clicks on all the steps of toothbrushing and tongue cleaning on the game avatar to score coins.	Brush your teeth with a soft brush two times a day. Avoid brushing teeth when platelet counts are low.
Level 2	Risk for infection	Identify alarming signs of worsening symptoms and inform the doctor or nurse.	The player bursts all the balloons one by one. On popping each balloon, a text message shows one alarming sign of infection.	Know these alarming signs. If you have them, tell your doctor and nurse immediately and visit the hospital.
Level 3	Risk for infection and constipation	Perform hygiene care regularly.	The player clicks on several steps of maintaining good hygiene (bathing, brushing teeth, shampooing, hand washing, passing stool daily, cutting nails, using sunscreen and wearing a scarf or hat).	Keep yourself clean to maintain a healthy body. If you are constipated, talk to your doctor and nurse.
Level 4	Pain	To relieve pain, take analgesics on time and perform deep breathing exercises at least 3–4 times a day.	The player takes the prescribed analgesics and performs deep breathing exercises.	Take the medicine as prescribed by your doctor and do deep breathing exercises.
Level 5	Fever	Take antipyretics as prescribed by the doctor to get relief from fever.	The player clicks on the steps of taking temperature, identifying fever, taking medicine as prescribed, rechecking temperature after an hour, informing the doctor if fever persists and going to the hospital if needed.	Talk to your doctor if your fever persists and go to the hospital.
Level 6	GI-related symptoms	Differentiate between healthy and unhealthy food options which are appropriate during sickness to stay healthy.	The player identifies healthy food options and collect them in a basket to score coins.	Eat healthy food and avoid unhealthy food.
Level 7	Hair loss	Accept that hair fall will occur and protect the scalp by covering it.	The player wears different head gears (hats, scarves, hair extensions). The player learns about hair fall and return of hair after completion of treatment.	Protect your scalp. Hairfall is temporary, and hair will return after treatment is completed.
Level 8	Fighting sickness	Identify measures that can be taken when feel sick and practice them.	The player bursts all the balloons one by one. On popping each balloon, a text message shows one measure to take when the child falls sick. The player must read and learn the measures.	Practice the measures taught to you when you feel sick.
Level 9	Mucositis	Gargles should be performed as prescribed by the doctor to prevent oral mucositis.	The player clicks on all the steps to gargle with the prescribed mouthwash. The player must read the message about adhering to this behaviour in a timely manner to prevent oral mucositis.	Gargle with the prescribed solution as advised by your doctor to prevent mucositis.
Level 10	Missing school	Perform a visual puzzle activity to find differences between two images. Keep your mind engaged, learn observation, attention to detail, and critical thinking skills, and do not miss school. Also, paint a few images for fun.	The Mascot advises the player to do activities at his school and some puzzles to remember fun at school. The player finds differences between the two images and paints several pictures.	When you miss your school and school activities, do some learning and fun activities at home.
Level 11	Nausea, vomiting and anorexia	Take antiemetics as prescribed and take small frequent meals to deal with nausea, vomiting and anorexia.	The mascot advises the player to take antiemetics as prescribed and eat small, frequent meals. Several healthy eating options appear on the table one by one. The player chooses between them through a ‘yes’ or ‘no’.	Take the medicine as prescribed and eat a small, frequent meal every 2–4 hours in a day, choosing healthy food options.
Level 12	Throat Irritation	Identify and eat soothing food items to decrease oral ulcers and throat irritation.	The avatar has oral ulcers and an irritating throat. Several soothing and soft food options appear before the player. S/he can choose from them and eat to soothe their mouth. The player selects a ‘yes’ for the food option s/he likes.	You have several soothing and soft food options to soothe your irritating throat. Select whichever food item you like and eat it.
Level 13	Psychological symptoms	Try various activities such as yoga, spending time in the garden, engaging in activities you enjoy, communicating with your friends, and practising meditation and prayer to gain inner strength.	The mascot asks the player to do some yoga exercises, observe things around, talk to friends and meditate and pray. The player performs these steps one by one and scores coins.	Do yoga and deep breathing to keep your mind relaxed. If you miss friends, call them. Meditate and pray.
Level 14	Fatigue	Maintain a balance between exercise/play and rest not to get fatigued.	The player clicks on several icons to help the avatar do exercises like walking, running, jumping and hopping to score coins. The avatar returns home and sleeps when tired.	Maintain a balance between exercise/play and rest not to get fatigued.

^*The scoring and reward mechanism comprises coins, claps, celebration animation and messages of applaud upon activity completion.