Glad you enjoyed it!
Numbers looping seems to be how a lot of people are interpreting it, so I might just change it to that.
How it currently works is, if there are no possible cards that can be played (for instance if you have to play one above 10), then you can play any card.
10 being both 10 and 0 though is definitely more intuitive, so in hindsight I probably should have just implemented it as looping.