Let me start
It wasn't the first Souls I played (that was Demon's), but it was the first one that I completed and I have played through it a dozen times since. It's the first game that ever made me really think to myself "this is my favorite game of all time". Plus it got me into the whole series while DeS failed to do so.
Do I think it will ever be dethroned? Two sequels, one step-sequel and a feudal cousin* later, I don't think so, honestly. It is hard for me to imagine a game to ever change my view of gaming that much. I certainly don't think it can be a game of the same nature.
Your turn.
*
It wasn't the first Souls I played (that was Demon's), but it was the first one that I completed and I have played through it a dozen times since. It's the first game that ever made me really think to myself "this is my favorite game of all time". Plus it got me into the whole series while DeS failed to do so.
Do I think it will ever be dethroned? Two sequels, one step-sequel and a feudal cousin* later, I don't think so, honestly. It is hard for me to imagine a game to ever change my view of gaming that much. I certainly don't think it can be a game of the same nature.
Your turn.
*
Dark Souls 2+3, Bloodborne, Nioh