I think I came across the game when I was researching the games that will be released at Essen 2014. I was looking for games that can be played solo as these games will probably be possible to cross platform and become digital games. I had just learnt Phaser in school and thus wanted to try my hand at digitalizing a tabletop game so I decided to work on Flip 9.
Flip 9 is a solo micro card game where only 9 cards are required. At the start, the cards are randomly shuffled and placed in a straight line. By means of swapping 2 cards, you are expected to reorder the line from 1-9 again. The swapping mechanism is quite clever because after you have selected 2 cards, your next card will have been selected and you only need to select 1 card from there onwards. How the card is selected is depending on the 2 cards that are being swapped.