Access to the game.

Control group.

In addition to standard medical care, children in the experimental group will receive the Match-3 game. The game will be designed for short individual gameplay sessions (as little as a few seconds), once to three times a day, over the course of 8 weeks, involving no more than 15 minutes per day in anticipated screen time. There is no way to "lose" the game. Through a structured series of daily interactions, the player will learn strategies and develop decision-making abilities that will assist with management of their own JIA. The Match 3 concept (similar to the game, Bejeweled) will require the player to successfully match the treatment strategy to the JIA symptom.

This will be centrally tracked by the clinical research project coordinator (CRPC).

Any issues or difficulties encountered during implementation of the intervention, control strategy, or outcome measures will be tracked throughout the study by the CRPC. For example, issues from a technical standpoint (for example, game not downloading properly, participant requiring assistance using the technology) or logistics standpoint.

Immediately post-trial children and parents in the intervention group will rate their acceptability of and satisfaction with the game and 10-15 English and 10-15 French children and one of their parents will take part in a brief qualitative interview.

Analytics will be used to track patterns of website program usage ("number of interactions" [clicks]).

This will be centrally tracked by the clinical research project coordinator (CRPC).

Measured using the Standardized Universal Pain Evaluations for Rheumatology providers for children and youth (SUPERKIDZ). It consists of 4 domains: pain intensity and location (5 items), fatigue (1 item), pain interference/evaluative dimension (10 items), and affective/emotional dimension (4 items) for children ≥ 8 years (and parent proxy report for children 4-8 years). This measure takes 3 - 5 minutes to complete.