No video footage survived of the Slamfest '99 Super Smash Bros

The year was 1999 and recording was by no means as simplified and widespread as it is today, but Nintendo's Super Smash Bros. 64 promotional event in Las Vegas was indeed recorded, in fact, it was actually broadcasted live

New Photos from the Lost Super Smash Bros. Slamfest '99 Event Have Emerged : r/nonmurdermysteries

Slamfest '99 aka Super Smash Bros. LIVE (lost livestream of promotional event for Nintendo 64 crossover fighting game; 1999) - The Lost Media Wiki

Super Smash Bros. (video game) - Wikipedia

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New Photos from the Lost Super Smash Bros. Slamfest '99 Event Have Emerged : r/nonmurdermysteries

I found photos in my old computer of the making of/rehearsals of Slamfest 99! : r/smashbros

Super Smash Bros. - SmashWiki, the Super Smash Bros. wiki

Slamfest '99 aka Super Smash Bros. LIVE (lost livestream of promotional event for Nintendo 64 crossover fighting game; 1999) - The Lost Media Wiki

Super Smash Bros. LIVE - The Lost Promotional Event (Slamfest '99)

Super Smash Bros. - Super Mario Wiki, the Mario encyclopedia

Super Smash Bros. (1999) - MobyGames

New Photos from the Lost Super Smash Bros. Slamfest '99 Event Have Emerged : r/nonmurdermysteries

What Was Slamfest 99 - LOST LIVE STREAM OF EVENT (1999) - LostMediaJunkie

Super Smash Bros. - Super Mario Wiki, the Mario encyclopedia