Hey, come on guys... hating classics like Blue Stinger or Sonic is just unfair. Its like hating an old girlfriend... you liked her then, so what happened? I would separate personal taste, in order to form an objective view (actually thats impossible, but lets try to get as close as possible). What is a bad game for me? A game that has no soul, a game made for the sole purpose of selling, a lazy or incompetent port, a game that has no substance.
Games like Blue Stinger are like B movies, sure they're questionable on the surface, but enjoyable for the crazy unrestrained ideas and humor... the developers were exploring new grounds and possibilities, they ventured far into something never done before, they challenged an unknown territory: the new hardware, the relative beginnings of 3D games, the deeper storytelling, they wrote their own engines, own camera systems, own collision systems, own particles, physics, texture compression... the list goes on (the Dreamcast's DTX and PVR texture compressions are still used in modern 3D engines). I personally respect those games much more than current-gen action games (most using
UDK which comes with tons of templates for everything... and yes for me every game using the Unreal engine looks like Gears Of War).
In conclusion, almost every game has some merit, it was created with an idea, people spent time and energy bringing it into existence.
And that can be
felt, not deduced by looking at it from a technical standpoint, or from the distance of time... It's not about loving or hating... if a game is bad, you wouldn't even remember it.