Is Afterglow free to play?

Yes. Afterglow runs in a browser at no cost, with nothing to install and no purchase to make.

How often does Afterglow reset?

Once a day. Everybody gets the same puzzle, and a new one replaces it when the game's day rolls over.

On greatest.games, and you can play it inside this page without leaving Alldle.

It sits in Colors, alongside the other daily games of that kind in the catalogue.

Colors 42 plays

Study five colours one at a time, then rebuild each from memory on hue, saturation and brightness.

Afterglow

Colors

A colour appears, then disappears. Rebuild it from memory on hue, saturation and brightness sliders.

Is Afterglow free to play?: Yes. Afterglow runs in a browser at no cost, with nothing to install and no purchase to make.
How often does Afterglow reset?: Once a day. Everybody gets the same puzzle, and a new one replaces it when the game's day rolls over.
What languages does Afterglow support?: English.
Where does Afterglow run?: On greatest.games, and you can play it inside this page without leaving Alldle.
What kind of game is Afterglow?: It sits in Colors, alongside the other daily games of that kind in the catalogue.

If you play Afterglow, the closest things to it in the catalogue are ColorGuesser, Prism and Toon Tone. They sit in the same colors category. See the full list of alternatives.