Twixtle

Twixtle is a daily word puzzle that used to be called Twixt; the old address now forwards to the new name. Each puzzle is a start word and an end word with four empty steps between them.

There are four kinds of move and you must use each exactly once, in any order. An anagram rearranges all the letters (heart to earth). A verb move switches to another form of the same verb (write to wrote). A homophone swaps to a word that sounds the same (sea to see). A compound move jumps to a word that joins the current one into a single closed compound (watch to tower, from watchtower). No word may appear twice, and the last move must land exactly on the end word.

Every puzzle starts in Perfect mode with the order of move types hidden. You can tap a hidden slot to reveal its type, but that costs the Perfect badge and some points; beat the day's median time to earn a Sharp. Past puzzles sit in an archive, and you unlock more of it by referring friends. You can start a league with friends, and a daily reminder can be set on your device.

Twixtle is made by Unseen Forms Limited, whose PerfectSharp games hub collects its other dailies. The daily puzzle is free with no account. An optional PerfectSharp+ membership adds a harder bonus puzzle each day, the full archive and early access to new games. Some visits show a short video for the maker's own Spelling Garden before play, with a button to continue to the puzzle.

It suits players who like word ladders and wordplay, and it rewards thinking in sounds and compounds as well as spelling.