Playing word games makes new vocabulary stick because you actively recall words...

https://milasultimatejournal.theglensecret.com/why-i-can-understand-english-but-can-t-find-the-words

Playing word games makes new vocabulary stick because you actively recall words in fun, meaningful ways. For example, using "respawn" in a game helps you remember it better by seeing how it fits in context and getting quick feedback when you use it right