Newer generations typically won't appreciate the original Fallouts due to their dated graphics. There's something about Fallout 1 & 2 that Bethesda can't seem to replicate (although Obsidian did a great job with New Vegas). The grungy environment and original plot elements (instead of searching for your son/Dad) keep you constantly intrigued and/or amused with each twist and turn. Fallout 4 can't hold a candle to Fallout 1 or 2 because of one word. Replayability.

The cult fanbase is well deserved, and even to this day there are total conversion mods being made for Fallout 2. Make sure to try out Fallout Resurrection and Fallout FIXT mods, or you'll be missing out.