• Crowd simulation

    We offer a software solution and expert knowledge for simulating crowds in big infrastructures, events or virtual worlds.

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Our vision




Software that is interactive

SimCrowds facilitates the process of re-using environments and environment data. The easy configuration and modelling of the simulation in that environment is using a pragmatic and intuitive interface. Unique is the interaction with the crowd in its environment during the simulation. This empowers the collective visual feedback and iteration of your team and your customers.

We listen: e-mail your challenge.

Features of the software

We made a premium-quality product based on the latest scientific insights.

We love transparency: all components of our engine have been described in (our) internationally published scientific papers.

Fast iterations

SimCrowds is the only simulator that can facilitate real-time simulation and visualization of 100.000 3D, individually controlled pedestrians (on a fast PC). Moreover, it supports more than 1 million pedestrians on one PC (not in real-time).

This allows quick development cycles, fast simulations, and shorter project times.

Real-time interaction

SimCrowds is the only simulator that supports real-time, interactive changes in the environment and simulation scenario.

Hence, modelling time is reduced. In addition, obstacles can be added, deleted, or moved, and the simulation is updated accordingly in real-time.

Advanced behaviours

SimCrowds supports advanced behaviours, including social groups, realistic collision avoidance, social distancing, flow behaviours and route changes when it is getting crowded.

Moreover, each individual pedestrians can be controlled and own behaviours can be added.

Complex environments

SimCrowds supports 2D environments as well as large 3D multi-layered environments, such as train stations or complex buildings.

Our software is unique because it represents the exact walkable spaces.

Continuous developments

SimCrowds is supported by Utrecht University by many staff members and students. Output from new research is continuously added to the software.

With this, we offer a healthy foundation of applications that facilitate high-quality, real-time crowds.

Projects we have carried out

We and our expert users have carried out several projects, including crowd-flow optimizations, evacuation studies, and AR studies. Click on the images below for more information.


In a recent project, SimCrowds was used to determine the capacity of polling stations for the parliamentary elections of March 2021, which was carried out for the Dutch Ministry of Internal Affairs and Kingdom by the experts of Nobleo Manufacturing. A research was conducted on the effects of the COVID-19 measures on the voting process within polling stations ensuring the 1.5 meters of physical distance.



The projects were carried out for the following clients.

logo city of Utrecht
logo city of Amsterdam
logo Movares
logo Apenheul
logo Schiphol
logo Utrecht University
logo city of Rotterdam



Development built on research and proven technology

We have written our core crowd simulation engine in C++ to facilitate the most efficient simulation in terms of calculation speed. The engine simulates in real-time 314159 pedestrians on a consumer PC, and 600000+ pedestrians on a high-performance PC. The engine provides the basic functionalities required for simulating a crowd: computing a representation of the walkable areas in an environment, performing interactively the actual simulation in this environment representation, and gathering statistics.

We integrated this engine in the popular game engines Unity3D and Unreal. Such engines allow interactivity, (super) real-time simulation and 3D animation of 100000+ pedestrians, and AR/VR extensions.

If you're interested in this engine for integration into your own product, please contact us at info@ucrowds.com.