Here's a yelp page about the Ohio company:
https://www.yelp.com/biz/tnt-amusements-columbus
And a twitter account:
https://twitter.com/tnttombo?lang=en
And their official website, which seems to have been taken down and has the domain for sale:
It doesn't seem like it is in active operation.
Maybe it's time to set up a franchise?
[edit]: According to archive.org, it looks like the tntgame.com website was last active in January 2014. By October 2014, it was offline.
https://web.archive.org/web/20140102084424/http://tntgame.com/