Updated August 15, 2017: New entries added
Puzzle games occupy a unique position right at the very centre of mobile gaming. As long as there have been phones with screens there have been abstract brain ticklers to help while away idle minutes.
Naturally, the genre took a massive step forward with the arrival of the smartphone. The App Store is packed full of brilliant puzzle games.
What's most impressive is the sheer variety of puzzle game experiences on offer, often borrowing elements from a range of other genres.
These days, there's arguably no more varied or accomplished a genre than the iOS puzzler. Here are 25 of the very best examples to prove it.