I've played that game at the bar with friends before. I drink a beer, they pull up the brewer's website and (provided they list the ingredients) see if I can guess them. I get as many wrong as right, but it's definitely entertaining. To me, at least.
Up Next: Pale Mild, Coniston Bluebird Bitter clone v1.0
Primary: ESB, Ordinary Bitter, Mild
Secondary: Sour Stout
Bottled: Düsseldorf Altbier, Sticke Altbier, Doppelsticke Altbier, Weizenbock, Berliner Weisse, Spruce Brown Ale, Arrogant Bastard Clone
Bottle "cellar": Brett B. Tripel, Imperial Red, Tripel, Quadrupel, Brett C. Oaked English Barleywine, Lamebic