Embellishment, eased and crescendo give ?i?d?e? If it is dreidls then the first and third of those ansers are wrong. I think the compiler has made a mistake because the word play leads to enigmas, an anagram of in games.
Thanks Novalis, My opinion is that it definitely can't be "dreidls" because of the down-clue answers, which you seem to agree with me are correct. So, I shall just put "riddles" and hope that the compiler has made a boo-boo ....