The comic-noir roguelike blackjack deckbuilder invites players to bend fate, and the rules, during Steam’s biggest celebration of card-driven chaos.
Indie developer Cosmic Cog LLC and publisher Zemore Indie Games have announced that Stabjack, their upcoming roguelike blackjack deckbuilder, will participate in Steam’s Deckbuilder Fest, running from May 4th through May 11th.

Blending the tension of blackjack with the strategy of deckbuilding roguelikes, Stabjack throws players into a dark, comic-noir world where every hand could be their last – and cheating might be the only way to survive.
What is Stabjack?

In Stabjack, players take on the role of Jack, a man pulled into a supernatural mystery after the brutal death of his wife. Armed with a sentient knife that whispers in her voice, players must navigate a world of demons, deception, and deadly encounters, unraveling a story where nothing is as it seems.
At its core, Stabjack reinvents blackjack as a tactical combat system. Players draw cards to power actions like attack, defense, and preparation, aiming to hit 21 for maximum impact while avoiding a devastating bust. Unique mechanics allow players to “cheat” by storing cards, manipulating outcomes, and building powerful synergies through modifiers, items, and deck customization.
What to Expect in the Demo

During Steam’s Deckbuilder Fest, players can play Stabjack’s demo and experience:
- A fusion of blackjack mechanics and roguelike deckbuilding
- First-person, high-impact knife combat with cinematic flair
- Investigation-driven storytelling with multiple cases to solve
- Deep deck customization with supernatural twists and strategic cheating
- Striking comic book inspired visuals set in a dark noir world
Designed for fans of deckbuilders and roguelikes alike, Stabjack offers a fresh spin on the genre, where risk isn’t just part of the game, it is the game.
Stabjack is currently in development for PC via Steam. Players can wishlist the game now and prepare to test their luck, and their nerve, during Steam’s Deckbuilder Fest from May 4-11.
For more information and to access the demo, visit the Official Steam page.
To follow progression and future updates, you can find Stabjack and Cosmic Cog LLC on Twitter/X, Bluesky, Facebook, and Instagram.














