81%Excellent matchTakedown: Red Sabre
42%4k42% positive reviews, Mixed across 4k reviews·FPS · Tactical
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A multiplayer tactical shooter focused on realistic weapon handling and special forces tactics. Work with your team, master authentic firearm mechanics, and fight through intense close-quarters combat across multiple game modes.
Stack Up
SteamStep into the world of modern special operations combat. This multiplayer tactical shooter focuses on teamwork, positioning, and weapon mastery, delivering intense firefights inspired by real special forces engagements.
Victory does not belong to the fastest trigger finger alone. Every encounter rewards players who understand movement, coordination, and the flow of combat.

Many shooters simplify or omit real firearm operations for convenience. This game brings those elements back to deliver a more grounded and authentic experience.
Players must manage actions such as slide manipulation, hammer control, and realistic reload procedures. Mastering these mechanics is not just about efficiency—it reflects the mechanical depth and craftsmanship of real firearms.
Our goal is to capture the true feel, rhythm, and character of handling real weapons, and bring that experience into gameplay.

Survival depends on more than just aim. The game rewards players who think and move like trained operators.
For example, in tight interiors, using a High Ready stance allows for faster reaction, while in more open spaces, a Low Ready stance provides better visibility and control. These are fundamental principles drawn from real-world tactical practices.
The game also features a hand signal system inspired by real special forces communication, allowing players to coordinate with teammates even without voice chat.
Beyond these examples, many additional details inspired by real tactical environments are built into the game. Some are immediately visible, while others are left for players to discover through experience.


The game is actively in development and will continue to expand with new maps, modes, and systems.
We believe the best tactical experiences are built together with the community. Player feedback will play a key role in balancing gameplay, refining mechanics, and shaping future updates.
Steam data © 2026 Valve Corporation. Trademarks are property of their respective owners.
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The best games like Stack Up are Takedown: Red Sabre, Task Force, OPERATOR, GROUND BRANCH, and Exfil.
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