Dragon Age: Origins. I got this game as a birthday present for my brother and ended up playing it for hundreds of hours myself. My love of this game also prompted me to join a Dragon Age TTRPG that ran for almost 5 years.

Final Fantasy VII (1997). This game helped me reconnect with my best friend. We played it together over a period of a few months and made so many great memories because of it. It also got me into the Final Fantasy series as a whole.