Thousand Year Old Vampire
Thousand Year Old Vampire is a journaling game where you play an immortal. You play the game by rolling dice and following prompts throughout the book. If possible try to get your hands on a physical copy of the game, this book is absolutely gorgeous.

As you start the game you create your vampire with a brief backstory. Then you add some mortal friends or foes, relevant skills and resources along with the memory of the immortal who turned you. Then you play the game with a D6 and a D10 and you navigate the prompts in the book. You can play as I do on this site with entries that are a bit longer. Another option is to write down your memories and experiences with just a sentence or two.
During the life of your vampire old treasured memories will fade with time. Mortals will die off, for your hand or age. Your resources and other characters will come and go throughout the centuries. You will learn new skills and forget old ones. Only you will remain, but after your creature has lived for a thousand years it won’t be the same as the mortal you once were.