Skip to content
WhatIfWorlds
Esc

What if you could see how things work?

Interactive simulations that let you explore, experiment, and discover the “what ifs” of our world.

Explore the Worlds

View All Worlds
  1. Experiment

    Change variables and try different scenarios.

  2. Observe

    Watch systems evolve and respond in real time.

  3. Understand

    Discover the relationships and consequences behind what happens.

Featured simulations

Each one is a working model, not an animation. Change a number and the whole system answers.

Traffic World

Traffic Ring

Buses circle a 25 km route, one every eight minutes. Let a stop get busy, or a light hold one bus, and watch an even timetable turn into long gaps and bunches of buses arriving together.

  • Add buses, bus stops and traffic lights, or change the top speed
  • Choose how long each red light lasts and how often it returns
  • Watch passengers queue and board at every stop
  • See how one slow stop turns an even timetable into convoys
Launch Traffic Ring
Running live
See all 4 simulations

Start with a question

Each one opens a simulation with that scenario already set up.