The best alternatives to FlappyBirdle are Cuedle, Multiplayer Wordle, and DIY Wordle. If these 3 options don't work for you, we've listed a few more alternatives below.
What do you think of FlappyBirdle?
AssemblyAI— Speech-to-Text API with superhuman accuracy
This is an elegantly simple web app to play the popular word game "Wordle" against your friends in real-time. It works well on desktop and mobile and supports up to 8 people at once. See who's the quickest!
Wordle is great but maybe you have an idea for a word that would stump your friends? Then you need DIY Wordle! Just enter a word and you can share it with others to play.
I wanted to improve my frontend skills, so I remade my current favorite game in 60 languages :) The whole thing is open-source, and you can suggest your own changes on https://github.com/Hugo0/wordle