An iOS game called EndeavorRX seems to help kids between eight and 12 years old who have ADHD, The Verge reports. And while the actual evidence to support those claims is somewhat shaky, the concept of a prescription video game is still a fascinating world-first that’s been years in the making.

A trailer for EndeavorRX suggests that the gameplay is pretty straightforward — players steer a cartoonish vehicle left or right to hit targets and avoid obstacles while it cruises forward. According to clinical research conducted by Akili Interactive, the company behind the game, it seemed to improve some kids’ attention spans.

After playing the game for 25 minutes every weekday for four weeks straight, one-third of kids with ADHD in a clinical study stopped showing signs of an attention deficit, according to research published earlier this year in the journal The Lancet.