Rimworld: New Vegas adds several items and weapons from Fallout NewVegas and other Fallout games, the mod will also focus on building your way up after arriving in the wasteland in the 2280's. It adds a level of difficulty by making you research your way up through different tiers of infrastructure, eg. power generation, you start with a car battery and some small solar cells and have to work your way up to vault generators and large efficient batteries. Same with cooking, crafting, building and more. For now the mod just has guns but more will be added soon.