EndeavorRx is a brightly-coloured hoverboarding game that looks like a million other games for kids. You speed down corridors, avoid obstacles, collect critters and pick your look from a rotating list of skins. You also need a prescription to play. 

For the first time, the US Food and Drug Administration, has approved a game for the treatment of ADHD in children aged between 8 and 12, and while it’s not available to anyone right now, when it launches on iOS the only way anyone will be playing it is if they visit their doctor and get a prescription. 

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