Virtual simulations as learning resources

Hi everyone, 

I am working on an accademic assignment where I'm looking into the value of virtual simulations as a learning resource and was wondering whether anyone had any hint or tips with regards to relevant projects or research articles I should be aware of? 

I am particularly focused on video based branching scenarios as learning resources for the development of skills in higher educaiton.

I would also really appreciate it if any of you have examples or experiences you would be willing to share (whether or not it has been written up as a research article).

Thanks in advance :) 

Olaug