A planet for use in sci-fi RPGs

An example of the content on www.starbrightillustrations.com/blog
Pity Us is a mining planet. The atmosphere is thick poisonous and soopy, the terrain is rugged and the temperatures are uncomfortably cold without being outright deadly. In fact all you require to survive on the surface is a filter mask for the poisonous elements in the atmosphere, without a mask the weak poison will claim the victim within hours.
The planet is now predominantly human, like the rest of Tarazet space, but the current human inhabitants are not the first to occupy the dig sites on this science fiction role-playing planet. The megamole, a dangerous and monstrous local life form, is believed to be the devolved descendent of the original digs, based on its instinctive use of technology despite having little other obvious indication of intelligence. The megamoles are intent on sabotaging the dig operations and often attack the dig cities in waves.
There are 12 major dig sites, or dig cities as they have become known on Pity Us.