A simple, but effective little Anagram game.
Four 7 letter words are laid out, along with 4 extra tiles at the bottom.
Add one letter to each of the "racks", shuffle the letters, and try to make four 8 letter words.

SPOILER (PROLINES)

You can Play Extra Tiles here, or watch out for it showing up in regular Foldapuz circulation, as of tomorrow.

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In addition, I've finally got around to fixing (I think!) Kakuro, which was previously oddly broken, so that puzzle is now back in the selection, once again.