Bartender: The Right Mix is a comedy game about improvising drinks. You choose from a rack of spirits and mixers, combine them in any proportion, and serve — and the game rates the result, usually with an entertaining reaction from the customer, sometimes with an explosion.
It's a Flash-era classic from the mid-2000s, and its charm is in experimenting: some combinations produce named cocktails and a good score, others produce something the customer will remember for the wrong reasons.
It runs through a browser Flash emulator that plays the original game file, so no plugin is needed.
Some combinations correspond to real named drinks and score highly, which is part of the game's puzzle. Most of the fun is in the failures.
Yes, through the emulator, with nothing to install.