Redactle is a well-known and very interesting word guessing game in which you redact a Wikipedia article by removing all of the hidden words. Other than prepositions, articles, and punctuation, there are no other words. Its topic is the very last thing you want to do.
Coming to this game, finding specific keywords is probably the most difficult aspect of it. If you think of a few keywords, you might be able to determine the article's theme, making the challenge easier to complete. However, you'll need to come up with several words to emphasize that. Prepositions and articles, on the other hand, may be insignificant or significant indicators.