From redactle-unlimited.com's About modal:

    About

    Redactle Unlimited was inspired by the original game at redactle.com which was inspired by Wordle. A random Wikipedia article is displayed with important words redacted (hence the original name Redactle). Redactle Unlimited has many useful features: multiplayer, smart guessing to match plurals and inflections (lemmatization), annotations and of course no daily game limit.

So, GP's game is a more feature-rich version of the original sitting at redactle.com if I understood correctly.