So we have a fair number of people who played DnD, but is there anyone here who has ventured towards other forms of tabletop roleplaying, namely Chaosium’s The Call of Cthulhu?
For those who don’t know, and may be interested, the overall premise is very similar to DnD, but with some key differences - the biggest being that the dice-rolling system is based off of a percentile system (“D%”), instead of D20, which has a number of implications. In presentation, the game is most focused on roleplay and character actions and reactions to events, rather than trying to progress your character while, hopefully, progressing through a story-arc. Sanity is a thing, and an actual stat, and the loss of sanity is something you have to be careful about, with things such as seeing someone die or be murdered causing the loss of sanity. (And it is the same for casting spells or witnesses other paranormal events.)
So, in short, it is for people who may want to take the game a bit more seriously, or for people who just want something different from your usual game of roll-dice-do-things.