Mario Run is a neat early runner game, where you have to just collect coins and get to the end of the level controlling the famous red plumber.
It’s fully playable at this stage, with some nice graphics and Super Mario Bros. music, but just the one level by the looks of it and lacking some polish in places.
The preview was released back in 2015, and hasn’t been updated since – which is a shame, as it looked to be shaping up really well. Maybe it will be come back to some day?