What are the beta elements of Donkey Kong 64?

Answer 1

E3 '99: The gameplay was just one big demo, and very different. It appeared to take place in the Angry Aztec lobby but instead of everything that was there in the final game, there were just I think around 10 doors, 2 had DK, 2 had Diddy, ect. Each door led to a short demo of either a level or a mini-game. Levels and other elements were also just called things such as "Jungle" or "Minecart Two"

Items Removed: Silver balloon w/star on it. Originally used to give an extra life.

Life was originally measured by 4-piece pies rather than watermelons.

DK originally had a shotgun that shot coconuts and Diddy had pistols that shot peanuts.

Other Elements: Junk-In-The-Box: Mini-boss from Frantic Factory that was originally in place of Mad Jack

When a golden banana was collected it showed only that Kong's golden banana count.

There was a shower in DK's Hut that depicted Banjo and Kazooie

Enemies such as Army-Dillo had a lot more vocal-acting lines.

Also there was a testing room that can still be accesed in the final game. Just collect all of the blueprints then go to Snide's and go to the Bonus menu. MASH A then B immediately after and you will be sent to a testing room with a non-moving DK, 3 pillars of verying sizes and a yellow banana balloon. You cannot leave this room without resetting the console, nor can you access the start menu here.