Updated Jby Michael Caruso: New Vegas has many different energy weapons to choose from. From sonic emitters to gauss rifles, here are the most powerful energy weapons in Fallout New Vegas. This list will show players some of the must-collect energy weapons in the game and help them decide on which ones they should use in battle. RELATED: How to Join Every Faction in Fallout New Vegas Laser and plasma weapons are in high supply in the Mojave wasteland, and players just can't stop themselves from using these powerful energy weapons. However, where its arsenal of toys really shines is in the energy department. Fallout New Vega s has possibly the best selection of armor and weapons of any Fallout game that's been released so far.