The Impossible Mod
The Impossible Mod was a project for Fallout: New Vegas meant to test the player's knowledge of the in-game lore, as well as provide a challenging set of puzzles to test the player's wits and tenacity. As well as making the player keyboard-smashingly frustrated.
Available here is a demo version. This demo is complete all the way to the conclusion of the first quest.
The mod has placeholder voice acting and is not indicative of the final quality of the project.
You will need to have NVSE, JIP LN, and JohnnyGuitar NVSE to use this mod.
To start the mod, travel towards the tribal ruins north of Goodsprings and find the cave entrance.