This simulation shows the TRAPPIST-1 planetary system, as detailed in the Wikipedia article at:
All seven planets have a similar mass and radius to the Earth, and have almost circular orbits. If you set the simulation running, you can watch how it evolves, and see how the orbital elements of the seven planets slowly change with the passage of time. By reducing the evolution time step by a factor of between 20 and 60, you should be able to watch transits of the four inner planets on the View From TRAPPIST-1.
Since different computers run at different speeds, you may need to edit the evolution time step to get the simulation to run at an acceptable rate.
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