SoD2 ( for brevity) is a fantastic entry in the zombie-survival genre, creating a tense, unique situation for gamers. You don't have a massive colony, rather a small (up to about 12) survivors with fascinating skills, quirks, and traits. Every new game is a new story, with four different maps to choose from, including the Trumbull Valley map that acts as a story mode.
What makes this game truly great is the amazing dev support. Undead Labs released the Juggernaut edition at the beginning of the pandemic, and then upgraded everyone for free. They have since released new maps, game mechanics, and fun challenges with rewards that make this game ever-evolving. All of these additions are free and there is no in game currency beyond influence, used for all transactions. Extras are gotten in the old method - skill, trial and error, and persistence.
I adore this game, and this studio deserves praise for taking a game they could have abandoned and creating something even better. I heartily recommend this game for anyone wishing to lose hours in the apocalypse with a truly immersive experience. They have several different levels of play, from casual to truly punishing. It keeps you coming back.
Just watch out for ferals, man. They will KILL you.