I have created a simulator for my team's robot using unity. Still some physics to work out, however everything in size and weight is to scale.
The game is available on our team's website at
acsrobotics.com/recycle-rush
It is programmed to work with both a keyboard as well as a single Logitech Attack 3. Other joysticks should work, but I don't know how their button mapping will be. If you would like for me to create a simulator for your team's robot, message me and I will see what I can do. I am fairly busy however, so no promises.
Hope you enjoy.