Darkest Dungeon is now available for free on the Epic Games Store as the Christmas Day offering in their 15-day game-a-day giveaway spree to celebrate the holidays. This is yours to keep as long as you grab it before 11:00 am EST tomorrow, when the next freebie takes its place. The game's DLC is also on sale until tomorrow, and you can pick up a copy of The Musketeer DLC for free. The track record of predictions in this tweet remains perfect, so it's likely tomorrow's freebie will be My Time at Portia. This description sheds some light on the Darkest Dungeon:

Darkest Dungeon® is a challenging gothic roguelike turn-based RPG about the psychological stresses of adventuring.

Recruit, train, and lead a team of flawed heroes through twisted forests, forgotten warrens, ruined crypts, and beyond. You'll battle not only unimaginable foes, but stress, famine, disease, and the ever-encroaching dark. Uncover strange mysteries, and pit the heroes against an array of fearsome monsters with an innovative strategic turn-based combat system.

Features

• The Affliction System – battle not only monsters, but stress! Contend with paranoia, masochism, fear, irrationality, and a host of gameplay-meaningful quirks!
• Striking hand-drawn gothic crowquill art style
• Innovative turn-based combat pits you against a host of diabolical monsters
• Narration system to celebrate your successes...and failures
• Rest your weary, shell-shocked characters in town at the Tavern or the Abbey to keep their stress in check.
• Classic CRPG and roguelike features, including character permadeath, procedural dungeons, and incredible replay
• Can you stem the tide of eldritch horrors erupting across your family’s ancestral estate?