Multiplayer Game Engine

Overview

I developed this real-time multiplayer strategy game during high school — my first large-scale project combining networking, algorithms, and full-stack architecture.
The game allows two players to place, merge, and command 3D-modeled troops in real time. Networking is powered by Riptide, ensuring smooth synchronization and low latency.

To prevent cheating, all pathfinding is handled on the server using the A* algorithm, while the Unity client provides animations, formation logic, and user interaction. The system also includes login, matchmaking, and persistent player data.

Highlights

Real-Time Networking

• Implemented with Riptide
• Custom protocol combining
  • TCP for reliable updates
  • UDP for continuous real-time movement

Game Mechanics

• Place and merge troops (3D models created by my brother)
• Choose formations and command unit movement
• Movement interpolation using Bezier curves

Server Architecture

• Built entirely in C# (.NET Core)
• Custom update loop with A* pathfinding
• Optional console-based GUI for troop visualization

Client Implementation

• Developed in Unity with local prediction for smooth gameplay
• Fully synchronized with the server for real-time fairness

Challenges Overcome

• Building a reliable multiplayer server from scratch
• Synchronizing multiple moving entities in real time
• Balancing client prediction with authoritative server control

Tech Stack

• Unity Engine – Game client and rendering
• C# / .NET Core – Server logic and networking
• PostgreSQL – Player data and matchmaking
• Riptide Networking – Low-latency communication layer