Correct
And in fact, does the same thing also go for Platform Countdown as well?
Yeah
One more thing to ask you: will Ledge Throw also be available on Poki and not on other websites (like Itch, CrazyGames, Newgrounds, etc)?
Yes, and you don't need to ask this for each Poki game.
Sorry, I was a bit curious, but I'll remember next time.