Darkest Dungeon: Collectors Edition includes the original game and all the DLC:

The Shield Breaker
The Color of Madness
The Crimson Court
The Musketeer
Darkest Dungeon is a challenging gothic RPG about the stresses of dungeon crawling. You will lead a band of heroes on a perilous side-scrolling descent, dealing with a prodigious number of threats to their bodily health, and worse, a relentless assault on their mental fortitude! Five hundred feet below the earth you will not only fight unimaginable foes, but famine, disease, and the stress of the ever-encroaching dark. Darkest Dungeon focuses on the humanity and psychological vulnerability of the heroes and asks: What emotional toll does a life of adventure take?

Recruit, train, and lead a team of flawed heroes through twisted forests, forgotten warrens, ruined crypts, and beyond. Uncover strange mysteries, and pit the heroes against an array of fearsome monsters with an innovative strategic turn-based combat system.