This is ridiculous:
https://www.redactle.comBasically, guess the Wikipedia article with all the words blanked out.
I tried it yesterday for the first time, didn't manage to solve it, gave up in frustration. And there's no reveal button, so I'm still none the wiser. Tried it again today, didn't take long to work out the general gist of what the article is about, but did take far, far too long to twig that the head word (what you need to find to "win" the game) was a variant form of a word I'd already guessed.
Not sure I'll stick with this one. Some people I follow on Twitter seem to be quite good at it, I just find it too hard to be satisfying.