Until tomorrow (Saturday, September 30th, 2017) at 11:59pm PDT, Steam and Bethesda have the original Fallout game for free. Like EA’s On the House promotion through Origin, this is not just a free weekend. If you “install” the game from the Steam store (although you only need to “install” it to your library — you can actually install it whenever you like) then it is, apparently, yours to keep.
Honestly, whenever I get around to it, this would be my first time playing the game, too. Back in the 1997 time frame, I was mostly playing games like Command & Conquer (including Red Alert). I never really got into RPG games, be it Western or Eastern. But, due to the wonders of PC gaming, I can just go back and, you know, play whatever I missed… because old games can be awesome, too.
Okay, I’m rambling. Add it to your Steam library if you haven’t already (and, of course, if you have a Steam account).