Random fact #0

Back in the days of SEGA Saturn, SEGA was really picky in terms of the game stability. All the games that we're about to be released had to pass a series of tests, like for instance they had to run for almost a week without any crash non stop on a real hardware, or withstand cartridge tilting. If it failed, SEGA wouldn't license it and developer had to fix the bugs and re-send it again.

To fool SEGA testers, game devs we're adding exception screens with the fake "hidden content". Like in Sonic 3D Blast, it presented a screen in the image below and then the level select screen.

So yeah, it's not a bug - it's a feature