Stack Up Demo

57KS
Released Jun 15, 2026by The PlatypusMixed(67% of 12 Steam reviews)

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.

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About Stack Up Demo

Step 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.

Authentic Weapon Manipulation

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.

Real Special Forces Tactics

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

Built With the Community

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.

Game details

Game details

Released
Developer
Publisher
Platforms
Steam rating
Mixed (67%)

Age ratings

IGRS 18DEJUS 14STEAM_GERMANY 16

Languages

Features

Stack Up Demo reviews

67% positive reviews all-time.

System requirements

Minimum

Minimum:
  • Requires a 64-bit processor and operating system
  • OS: Windows10
  • Processor: Intel Core i7-9700
  • Memory: 8 GB RAM
  • Graphics: NVIDA GeForce GTX 1070
  • DirectX: Version 12
  • Storage: 6 GB available space

Recommended

Recommended:
  • Requires a 64-bit processor and operating system
  • OS: Windows11
  • Processor: Intel Core i7-12700
  • Memory: 16 GB RAM
  • Graphics: NVIDA GeForce GTX 3080
  • DirectX: Version 12
  • Storage: 12 GB available space