Sadly there isn't an actual point and click graphic adventure of Buffy the Vampire Slayer (why not??) but if there was one, it would look like this and yes I would play it.
Artist Andrew Scaife created and drew 7 scenes, one from each season and he's filled them with lots of visual references to the series.
Source: Tumblr– andrewscaife
Buffy The Vampire Slayer — The Graphic Adventure by Eoghann Irving, unless otherwise expressly stated, is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.