Free crowd flow simulatorMall Crowd Flow Simulator

A free crowd flow simulator for interior and spatial design students. Hundreds of visitors walk a 120 × 70 m mall in real time. Change the crowd, move kiosks, close entrances and run an evacuation drill. The heat map shows where people jam, graded by Fruin's level of service.

Mall time11:00

Drag kiosks, planters and benches to move them. Pick a tool to add new ones, or drag across the floor to lay a queue barrier. Click an entrance to open or close it.

0people inside
0walking the mall
0.00peak density, people per m²
0hotspots at level E or F
–average visit length
0people leaving per minute

Key features

What you can do with Mall Crowd Flow Simulator.

01

Real-time crowd

Hundreds of agents walking between stores, food court and exits.

02

Density heat map

Level-of-service colours from free flow to jam.

03

Editable layout

Move kiosks, close entrances and change corridors.

04

Evacuation drill

Measure how long it takes everyone to exit.

05

Time of day

Morning, weekend peak and event crowds.

06

Live metrics

Density, speed, queue time and bottleneck alerts.

How it works

Get started in a few steps.

  1. Start the simulation and pick a crowd level.
  2. Watch the heat map for red and orange hotspots.
  3. Move kiosks or open and close entrances to ease flow.
  4. Run an evacuation drill and note the exit time.
  5. Compare layouts and keep the one with the best flow.

Why use this simulator

Practical benefits for students and designers.

Design for people

See how layouts affect real movement, not just appearance.

Find bottlenecks early

Spot jams before they appear in a built space.

Plan safer spaces

Evacuation drills show how exits and corridors perform.

Data-led decisions

Use numbers to back up your design proposals.

Who is it for?

Made for learners and working designers.

  • Interior and spatial design students
  • Retail and mall designers
  • Architecture students
  • Wayfinding and signage designers
  • Event and venue planners

Related design concepts

The ideas behind the simulator, in brief.

Level of service

John Fruin's level of service grades pedestrian space from A (free flow) to F (jammed) based on people per square metre.

Speed-density relationship

As crowds get denser people slow down. Weidmann's curve models this relationship.

Bottlenecks

Narrow points such as kiosks near corridors or single exits limit how many people can pass per minute.

Wayfinding

Clear sightlines and signage spread visitors more evenly through a space.

Related IMS DIA courses

Study these topics in depth at IMS Design & Innovation Academy, Noida.

Related design tools

More free labs from DIA Design Labs.

Frequently asked questions

What is a crowd flow simulator?

It models how people move through a space so designers can find congestion and test layouts and exits.

Is this a certified evacuation study?

No. It is a teaching model and does not replace a certified fire or evacuation analysis.

What do the heat map colours mean?

They follow Fruin's level of service. Green is free flow and red means people are packed and slowed down.

Can I change the mall layout?

Yes. You can move kiosks, close entrances and change the crowd size and time of day.

Is it free and mobile friendly?

Yes. It runs in the browser on phones, tablets and desktops.

Which IMS DIA course covers spatial design?

Spatial planning and retail design are covered in B.Des Interior Design, and wayfinding in Communication Design.

Turn practice into a design career

Study design at IMS Design & Innovation Academy. Explore the course, take the DIA Design Aptitude Test (D-DAT) or apply now.