So there's a few because they all sort of blend together given I was young and had a PS1, but...
Dino Crisis 1 I played on PC with my dad first though and Dino Crisis 2 (not shown) has the distinction of being the only game 6-8 (forget the exact age) year old me could complete in an afternoon without a guide. Loved that game to death and still do. It was basically my Resident Evil as a kid.
Also I still remember the code for all levels on the Lost World game off by heart (Square, X, O, Triangle, Triangle, X, Square, O, Triangle, O, X, Square).
Not pictured are Pokemon Red/Blue/Yellow as they may have been contenders too given it was the height of the craze.