Hello, I've experience working mainly for mobile systems, as weel as a few tech demos for webgl (mainly with babylon). I'm very competent in unity and for sure can work on 10 games simialr to the one you refered in simmer.
What I would love to know is who is the audience for these games, and if you have as well thought on what kind of subjects are to be done.
Please keep in contact asap so we can arrange the details, regards.