Note: base game required for Steam and Epic. Not for Playstation and Xbox, everyone can claim that. Free for one week until November 10.
Steam: https://store.steampowered.com/app/2156750/Dying_Light_2__Dying_Laugh_Bundle/
Epic: https://store.epicgames.com/p/dying-light-2-stay-human--dying-laugh-bundle
Playstation: https://store.playstation.com/search/dying%20light%202%20stay%20human%20dying%20laugh%20bundle (first search result)
Xbox: https://www.xbox.com/games/store/dying-light-2-stay-human-dying-laugh-bundle/9PG3V8GV9WPG/0010