Simulation refers to the process of creating a virtual model of a real-world system to study its behavior and performance under various conditions. This topic covers the principles, methodologies, and applications of simulation in fields such as engineering, science, healthcare, and social sciences. Simulations can range from simple models to complex, interactive environments, allowing researchers and practitioners to test hypotheses, train individuals, and predict outcomes without the risks or costs associated with real-world experiments. The topic also explores different types of simulation software and tools, as well as best practices for designing and validating simulations.

Play with fluids in your browser (works even on mobile)

• UpdatedNov 12, 2024
• JavaScript

An open source re-implementation of RollerCoaster Tycoon 2 🎢

• UpdatedDec 17, 2025
• C++

Bullet Physics SDK: real-time collision detection and multi-physics simulation for VR, games, visual effects, robotics, machine learning etc.

• UpdatedOct 22, 2025
• C++

类似按键精灵的鼠标键盘录制和自动化操作 模拟点击和键入 | automate mouse clicks and keyboard input

• UpdatedOct 11, 2025
• Python

Combustion engine simulator that generates realistic audio.

• UpdatedJun 17, 2024
• C++

A multi core friendly rigid body physics and collision detection library. Written in C++. Suitable for games and VR applications. Used by Horizon Forbidden West.

• UpdatedDec 15, 2025
• C++

A work-in-progress, open-source, multi-player city simulation game.

• UpdatedJan 7, 2023
• Rust

Transportation planning and traffic simulation software for creating cities friendlier to walking, biking, and public transit

• UpdatedSep 10, 2025
• Rust

OpenTTD is an open source simulation game based upon Transport Tycoon Deluxe

• UpdatedDec 17, 2025
• C++

Written in C++ and using SDL, The Powder Toy is a desktop version of the classic 'falling sand' physics sandbox, it simulates air pressure and velocity as well as heat.

• UpdatedDec 10, 2025
• C++

The fastest and most memory efficient lattice Boltzmann CFD software, running on all GPUs and CPUs via OpenCL. Free for non-commercial use.

• UpdatedNov 23, 2025
• C++

Python framework for creating, editing, and running Noisy Intermediate-Scale Quantum (NISQ) circuits.

• UpdatedDec 17, 2025
• Python

An online request replication and TCP stream replay tool, ideal for real testing, performance testing, stability testing, stress testing, load testing, smoke testing, and more.

• UpdatedJun 18, 2025
• C

An open source quadruped robot pet framework for developing Boston Dynamics-style four-legged robots that are perfect for STEM, coding & robotics education, IoT robotics applications, AI-enhanced robotics application services, research, and DIY robotics kit development.

• UpdatedNov 25, 2025
• C++

Webots Robot Simulator

• UpdatedDec 16, 2025
• C++

Eclipse SUMO is an open source, highly portable, microscopic and continuous traffic simulation package designed to handle large networks. It allows for intermodal simulation including pedestrians and comes with a large set of tools for scenario creation.

• UpdatedDec 17, 2025
• C++

[IEEE T-PAMI 2024] All you need for End-to-end Autonomous Driving

• UpdatedJul 2, 2025

Tower defense game that teaches cloud architecture. Build infrastructure, survive traffic, learn scaling.

• UpdatedDec 16, 2025
• JavaScript

The main repository for the development of the evolution game Thrive.

• UpdatedDec 17, 2025
• C#

Mesa is an open-source Python library for agent-based modeling, ideal for simulating complex systems and exploring emergent behaviors.

• UpdatedDec 17, 2025
• Python