Epic Games Store free mystery game for December 24, 2025 REVEALED

Mahaksh has been a part of Khel Now since 2024. He covers gaming-related news and updates.

Published at :December 26, 2025 at 12:28 AM

Modified at :December 26, 2025 at 12:28 AM

(Courtesy : Striking Distance Studios)

The Callisto Protocol

The gamers and fans are pretty hyped as Epic Games Store has announced another free mystery game for December 24, 2025, The Callisto Protocol.

This is a survival horror space game, inspired by Dead Space, and is now claimable from starting 9:00 AM PST (Dec 24, 2025) for a 24-hour window. Let’s check out more details in this article.

The Callisto Protocol is free on Epic Games Store for the next 24 hours. Another mystery freebie tomorrow https://t.co/F24biIfl6U pic.twitter.com/f1wLUe2Uau
— Wario64 (@Wario64) December 24, 2025

The Callisto Protocol: Story & Gameplay

This game is set 300 years forward on Jupiter’s moon Callisto and players play as Jacob Lee, a prisoner in Black Iron Prison.

A rare outbreak transforms inmates into hideous creatures, throwing the facility into pandemonium. Discover Callisto’s dark mysteries while battling in a collapsing hellscape.

More dread atmospheric environments, scarce resources to survive, tight corridors and brutal combat that includes melee, guns and gravity guns for CC.

Dismember foes strategically; each conflict is a frantic dance. Callisto’s desolate solitude heightens psychological fear, rivaling Dead Space’s claustrophobia.

This game was launched in 2022 and received some mixed reviews on Steam. Still, a pretty good game to play for free at cost.

How to claim The Callisto Protocol for free?

Here’s how you can get the game for free:

Hit store.epicgames.com/free-games.
Click “Get” on Callisto Protocol (9 AM PST Dec 24–9 AM PST Dec 25).
Now, this game will be yours forever in the library.

Previous Holiday Mystery Games

Here are all the free mystery games till now:

Date	Game
Dec 11–18	Hogwarts Legacy
Dec 18	Jotunnslayer: Hordes of Hel
Dec 19	Eternights
Dec 20	Blood West
Dec 21	Sorry We’re Closed
Dec 22	Paradise Killer
Dec 23	Bloodstained: Ritual of the Night

FAQs

When can I claim The Callisto Protocol free?

Dec 24, 9:00 AM PST – Dec 25, 9:00 AM PST (24 hours).

What’s Callisto Protocol about?

Jacob Lee fights mutated inmates in a chaotic Callisto prison, uncovering secrets.

Similar games to Callisto?

Dead Space series—same tense survival horror vibe.

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Mahaksh Chouhan

Mahaksh Chauhan is a passionate gaming journalist who loves for old-school RPGs and turn-based games. With a keen eye for storytelling and a deep understanding of game mechanics, Mahaksh brings an unique perspective to the world of gaming. Inspired by classics like Persona, Red Dead Redemption 2, and Skyrim, Mahaksh is dedicated in sharing the magic of games with readers. When not writing or gaming, Mahaksh can be found cheering on WWE superstars or watching his favourite Anime.