December Game Pass Adds Mortal Kombat 1, Dome Keeper & More! (Full Breakdown) (2025)

Get ready to dive into a gaming extravaganza because December’s Game Pass additions are here, and they’re packing a punch! But here’s where it gets exciting: alongside fan favorites like Mortal Kombat 1, there’s a quirky mix of genres that’ll keep you glued to your controller. Let’s break it down.

First up, Mortal Kombat 1 lands on December 10 for Ultimate and Premium subscribers. This isn’t just any fighting game—it’s the latest installment of the iconic series that dominated arcades in the ’90s. And this is the part most people miss: while it introduces a revamped combat system and fresh game modes, it stays true to its roots with the over-the-top, blood-soaked fatalities we all secretly love. Yes, you can still turn your opponents into adorable babies—because why not?

Next, Routine finally makes its debut as a Game Pass day one release for Ultimate subscribers. First teased in 2012, this sci-fi horror game has been a long time coming. With its retro-futuristic vibe, it’s a nostalgic trip with a chilling twist. But here’s the controversial part: will it live up to the decade-long hype, or will it feel like a relic of the past? Let’s discuss in the comments.

Dropping a day earlier on December 9, Dome Keeper is a roguelike gem that’s dangerously addictive. Part mining simulator, part light tower defense, it’s the kind of game that’ll have you muttering, ‘Just one more run,’ until the sun comes up. Trust me, I’ve been there.

Available now for Premium and Ultimate subscribers, Lost Records: Bloom & Rage is a narrative adventure set in the ’90s from the creators of Life is Strange. Dust off your flannel shirts and prepare for a trip down memory lane—but with a storytelling twist that’ll keep you guessing.

And this is where it gets even better: several former Ultimate exclusives are now spreading their wings for Premium subscribers. We’re talking heavy hitters like Indiana Jones and the Great Circle, Monster Train 2, 33 Immortals, and the oddly satisfying Spray Paint Simulator. Whether you’re into action, strategy, or just want to unleash your inner artist, there’s something here for everyone.

So, what’s your take? Is Mortal Kombat 1 a must-play, or are you more intrigued by the retro charm of Routine? Let’s spark some debate—drop your thoughts in the comments below!

December Game Pass Adds Mortal Kombat 1, Dome Keeper & More! (Full Breakdown) (2025)

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