Now there’s a Cantonese version in romanization: Zidou.
Is there already a Mandarin version in Hanyu Pinyin or any other romanization system? If not, or if the only existing ones are based on syllables and not words, then there certainly should be
Further reading: Wordle: As word puzzle takes over the internet, Hong Kong professor creates Cantonese version. Hong Kong Free Press, January 29, 2022.