Freelancer. Flying into a cloud in hostile space. The music generally gets muted,and all you hear are the sounds of lightning discharges all around you,and a strange howling sound. The big winners are the Badlands in the New York system and the Pequena and Grande Negra clouds in Texas. These three clouds also have densely packed debris several times larger than your ship. The Badlands has no real hazards unless you're a poor pilot,but it's controlled by the Liberty Rogues,who are more than likely going to hate your guts. And early in the game,they're a legitimate threat. Imagine,exploring the near-zero visibility cloud,which is VERY dark violet in colour,populated by extremely large rocks about the colour of Minecraft's Obsidian. All you hear is the creaking of your hull,an inexplicable otherworldly howl,and the odd flash of lightning to illuminate the distance. Then three ships open fire on you. Then three more. THEN ONE OF THOSE ROCKS. Congratulations,you just found Buffalo Base. Enjoy your death.
And the Negra clouds? No enemies fly through them,to my knowledge. But they're radioactive. In fact,I believe that these pockets are the most radioactive pockets in the game. And radiation constantly eats your hull,ignoring your shields. It's pea soup in those clouds,and with all that debris,one crash will send you spiraling so bad you WILL lose your orientation. So,in these clouds,should you chose to enter,you will be alone. No sounds but the sounds of your ship,the ungodly howls of the damned,and the odd flash of lightning. While the Badlands are creepy until you get a ship from Bretonian space,these clouds are creepy at all times. Should you die here,you'll die alone. No one will know. No one will look there. You will pass unremembered.
And the kicker? The Negra clouds are the result of an INDUSTRIAL ACCIDENT.