An Easter Egg within an Easter Egg in the 8-bit Mini-game

Since the main game was down for maintenance earlier, you couldn't play it, but there was an 8-bit character in the bottom right corner of the maintenance waiting screen, and if you clicked it, you could play a mini-game. It's a bullet-hell shooter like Galaga, and you'd accidentally get sucked into a black hole and die. But in the latter half of the game, there's a shiny black hole like this. If you go into it, another game starts. It's a simple game where you shoot enemies while dodging up and down in 3 lanes. Clearing this game by reaching round 3 completes it. At that point, green liquid? is overflowing in the background. If you spam-click that liquid, yet another mini-game begins. This turns it into a Cookie Run + bullet-hell shooter. My hands are too clumsy so I got stuck here, but I'm curious if anyone else has gone further. (Most people probably didn't even know about the easter egg itself...?)