Bob-omb Battlefield

Bob-omb Battlefield is the first course in Super Mario 64. Set amid a war between the two races of Bob-ombs, it continues the trend of grassy fields for opening levels in the Super Mario series and features a large mountain with a spiraling path up to it. Along with that, other notable areas include a floating island and a cage guarded by a Chain Chomp.

Phenomena
Some players have reported encountering the White-eyed Chomp here. The White-eyed Chomp often serves as a warning that the copy of the game is heavily personalized and contains more dangerous and rare Anomalies such as the Wario Apparition, or, more commonly, the Fourth Floor.

Other phenomenons that occur with the White-eyed Chomp are that the text will occasionally be different, and stars might move to a different location.