What is the game that made you consider pc gaming?

I don't mean the game that made you pull the trigger to get/build one. I mean the first pc game you saw/played right before it became a WANT for you. Mine was The Stanley Parable and this old game called Evoland. I went to my aunt's house for Thanksgiving a long time ago and one of her son's, my cousin, who was a huge pc and robots nerd, had soooo many games on steam. I only had time to play a few, but those two stood out They were so different. Ever since that moment, I knew I wanted to check out the PC scene.