Anyome recognise this word game

[Viviennemary]

I was reading ab9ut this word game yesterday on MN. Now I cant find it anywhere or the post. It was called something like Cascade. And as you got the letters right they turned green. Anyome recognise it. Thanks. And the words got longer.

Stackdown?

Thanks but that's not it. It was more in lists. It was quite good.

Cascadle
https://cascadle.xyz/

That's it!! Thanks very much.

https://cascadle.xyz/ ?
That link doesn't take me to any puzzle site. Can't seem to get via Google either... 🤔