Playing Bookworm Adventures and I, uh, managed to make a word too new for the game. I put in the word "nihonium" (element 113, for those unfamiliar), thinking myself oh so clever, only for the game to be like, "Nope. Not a word." Turns out, nihonium wasn't named until 2016, well after this game came out. (In what is a good ending, I was at least able to make the word "niobium" instead).