Prerelease:Super Smash Bros.

Kakuto-Geemu Ryuoh
Before it was the game we know and love, Super Smash Bros. was Kakuto-Geemu Ryuoh (Dragon King: The Fighting Game). The most notable thing is that the developers at the time didn't plan to feature Nintendo characters, instead, generic human models were used. Amusingly enough, according to Iwata Asks on Nintendo's website, the background is from the Ryuoh-cho neighborhood, the place where HAL Laboratory is.