The game was released on Steam and at retail (Steam key) on October 19, 2010. The game shares much of its engine and assets with Fallout 3. The game is not a direct sequel to its predecessor Fallout 3, but follows events referenced in Fallout and Fallout 2 and features the return of elements from Fallout 2. 11.2.4 The Mod Configuration Menu (MCM)įallout: New Vegas is a single-player first-person open world RPG shooter developed by Obsidian Entertainment and published by Bethesda Softworks.11.2.2 Load Order Optimisation Tool (LOOT).11.2.1 New Vegas Script Extender (xNVSE).9.7 Unable to trade/loot in the German game Version.9.6 Data Files get auto loaded on Startup.