Photo of "Black Hole Level" that was revealed to be the beta version of Super Mario 64

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As long as the "SMILE Poison" doesn't get to you, you should be ok...

Nintendo 64 Game Showcase 1996 Introduction Segment

UPDATE: II

Here is what I have so far

Beta Ghost House

no context needed.

Beta Yoshi is racist

Real betagay spotted at 3AM in a Japanese Forest.

I tried.