I’ve never technically beaten the final Bowser boss in Super Mario 64. Me and my siblings grew up with the game as kids. I remember us having 114 out of 120 stars. We were trying really hard to 100% the game, then I think it was our nephews who ended up deleting our save. That was a sad day.

We never did find the second secret slide. I only found where it was once my best friend showed me the location as adults.