Nice. The game I was hosting kept dying with "Oh no, Something went wrong :(". However, I like the concept. These are good for personal social gatherings, but has great potential for more public places, too (like pubs/bars).
Good idea with the pubs. I also considered approaching places with Karaoke rooms. Like a little private game room party while you are out.
Most of the games are designed to be playable with 3-16 people (even 16 is pushing it for some). Would potentially need to design some games for a larger audience in a bar.
Trivia games are great for bars - finding/creating quality trivia content, and lots of it, may be the greater challenge.
It would be especially saleable if the UI theme can be customized to the establishment - even just a custom background. The market would be for smaller, independent (non-chain) places that won't pay for, or have access to, the more expensive companies that provide this kind of application to bars.
Anyway, I wish you success!