“Bub’s Broadcast” is a YouTube channel put out by Taito, mostly to promote various Taito properties in Japan. “Bub” is a mascot character based off of Bub, a.k.a. Bubblun, from Bubble Bobble. It’s low-key, yet entertaining, fare.
This particular video is of interest though because Bub steps outside his usual stomping grounds, and plays Namco’s Pac-Attack, that Tetris-style puzzle game where you have to create paths out of falling blocks to guide Pac-Man to eat ghosts.
It’s in Japanese, but there’s English subtitles, and of special interest is that Bub reveals some possibly-unknown codes for the game. If you point at Hyper difficulty and hold L and R down when selecting it, the game will begin at Level 300 instead of 100. And if you hold Down and Right on the control pad while also pressing L and R, you begin near the highest possible difficulty, at level 900! Also revealed is that, if you charge up the Fairy meter all the way and a fairy comes out, but you don’t wish to use her ghost-clearing power, you can hold Up and press B repeatedly to cancel it, causing her to fly away and giving you 10,000 bonus points. It’s always interesting when these unknown game elements are revealed long after the games release!