Command Your Interstellar Empire
Deep real-time 4X strategy, rebuilt for the modern era.
Protostar 4X is a deeply detailed real-time space strategy game — explore, expand, exploit, and exterminate across a procedurally generated galaxy. Inspired by the legendary Aurora, rebuilt from the ground up with a custom engine, browser-based UI, and a focus on moddability wherever practical.
Fully Custom 4X Engine
Built from scratch on C# .NET to handle the deep complexity of real-time 4X gameplay with thousands of entities.
Multi-Browser Gameplay
Open multiple tabs across devices — star system, galaxy map, and logs — all connected to the same game simultaneously.
Modular Design
The core gameplay is itself a module. Add community modules or go total conversion — the engine won't limit you.
ECS-Based
High-performance Friflo.ECS powering all game logic, baked into the module API for full customization.