Something like that could work really well in a place like Mana Bar (a cocktail bar and video gaming lounge, really just a bar with wall to wall consoles etc.).

Something like that could work really well in a place like Mana Bar (a cocktail bar and video gaming lounge, really just a bar with wall to wall consoles etc.). You could have games that you pay to play, and how well you do = how much alcohol your drink gets. With appropriate warnings and such that could be really fun.