There are 2 repositories under unity-robotics topic.
Central repository for tools, tutorials, resources, and documentation for robotics simulation in Unity.
URDF importer
ROS package used to create an endpoint to accept ROS messages sent from a Unity scene using the ROS TCP Connector scripts
A warehouse environment for robotics simulation in Unity.
Simulating a LIDAR in unity and publishing that data on a ROS topic
Executing SLAM gmapping in Unity ROS setup
This is how I'm keeping track of my progress in my master's thesis. Please beware that this is not yet a finished product.