Mine was Harry Potter and the Philosopher's/Sorcerer's Stone
It was such a good, i used to play it everyday for hours, idk why but i was very scared of doing missions,but still i somehow did those.

Mine was Ocarina of Time.
Played that game for hours on end. I could spend a long time just exploring. It took me a total of 8 years to beat it the first time because I'm not smart.

gonna guess on everything that gave your mind short circuit
I was actually stuck in most dungeons for a veeeeeeery long time. It is a game that took me 8 years to finish after all lol (despite playing it a lot).
On the other hand I can proudly say I could beat it 100% with no help or guides. Guess it's the minimum expected since it took me most of my primary education life to beat.