I'd have to go all the way back to pinball, since I've always been fascinated with games.
But the very first video game that really sucked me in was Batman on the NES. I'm talking fully immersed; no awareness of my surroundings. Jacked in.
The music paired with the grim visuals was such a vibe. Just playing it made me feel cool. My parents had to drag me away from that birthday party haha.