What is Eustress?
The next generation of game creation and play
Eustress is a complete ecosystem for creating, sharing, and playing interactive 3D experiences. Built from the ground up in 100% Rust, we deliver unprecedented performance, memory safety, and developer experience—all while remaining free forever.
Two Products, One Vision
Eustress Engine
The Engine
A professional-grade game engine and creation suite. Build stunning 3D worlds, script gameplay logic, design UI, and publish to multiple platforms—all from one tool.
- Visual editor with hot reload
- Rust & Soul scripting
- Built-in multiplayer networking
- One-click publishing
Eustress Player
The Platform
Discover and play thousands of community-created experiences. Jump into games instantly, connect with friends, and explore endless creativity.
- Instant play
- Cross-platform multiplayer
- Social features & friends
- Curated game discovery
Why Eustress?
Other engines fail where we excel
Faster Development
Hot reload, instant preview, and Soul scripting eliminate the compile-wait-test cycle that plagues traditional engines.
GC Pauses
Unlike Unity's C# or other managed languages, Rust has zero garbage collection. Your games run smooth, always.
Instances
Handle massive worlds with millions of entities. Point clouds, voxels, CAD data—Eustress scales where others choke.
Memory Safe
Rust's ownership model eliminates crashes, memory leaks, and security vulnerabilities at compile time.
Performance That Matters
* Benchmarks from empty project, release builds, 2024 hardware
What Can You Build?
Games
Social SpacesSimulations
Education
CAD Viewers
Digital TwinsReady to Create?
Download Eustress Engine and start building your first experience in minutes
Download Studio