Fallout is one of those franchises that has survived to this day. To me this game has defined what a “post apocalyptic” game environment looks like.
As a spiritual successor to Wasteland, the original fallout was amazing at the time. Its creation was somewhat turbulent as it started as a GURPS system game but lost the license in the middle of the development. It was made towards the end of the DOS era so the graphics and controls were polished and aged quite well.
As a very dialog heavy game it has managed a perfect blend between seriousness and humour. For me this game is where I actually learned English.