Dinosaur Polo Club’s transport-puzzler Mini Metro has sold over one million copies.

The minimalist puzzle-strategy title launched on PC in late 2015, before hitting mobile platforms a year later. Mini Metro came to Nintendo Switch earlier this year, which likely helped boost sales past the million mark.

The right track

On top of the sales figure, Mini Metro will also be added to Mightier, a platform set up by Boston Children’s Hospital.

The service aims to help young kids and teens manage intense emotional reactions and cope with stress.

Our sister-site PCGamesInsider has the full story.