I particularly love this one... Bubble Bobble was indeed one of my favourite games on the Master System, AND I NEVER FINISHED IT !!!!!!! It's too complicated, I never found the necessary items to access the last level of the game. And that's highly frustrating. I am beginning again on an emulator I found, so it's a bit easier, and hopefully, three years from now I might finish it.And my favourite...
It's a shame that it's a BSOD and not a GNU* prompt, but it's still fine.