Bethesda’s Creation Engine has powered some of the company’s biggest RPGs for well over a decade, including The Elder Scrolls, Fallout, and more recently Starfield using Creation Engine 2. While many players have questioned why Bethesda hasn’t switched to Unreal Engine, a longtime Fallout developer believes there’s a good reason to stick with its in-house technology.

Josh Sawyer Praises Creation Engine’s Workflow

During a recent livestream, Josh Sawyer of Obsidian Entertainment, who worked closely with Bethesda while developing Fallout: New Vegas, described Creation Engine as one of the easiest game engines he has ever used.

According to Sawyer, the engine allowed developers to build large-scale RPGs in a relatively short period of time. Despite acknowledging that the engine is filled with bugs and occasional frustrations, he said its content creation tools and scripting system make development significantly more efficient.

Sawyer explained that the engine’s flexibility outweighs many of its shortcomings. He added that most issues are relatively straightforward to identify and resolve because the engine provides clear debugging information for developers.

Bugs Also Helped Build A Massive Modding Community

One of the reasons Creation Engine remains popular among both developers and players is its extensive modding support. Sawyer noted that the same flexibility responsible for many of the engine’s bugs also enables creators to produce an enormous amount of user-generated content.

Community members later expanded on the discussion by pointing out that one of Creation Engine’s biggest strengths is its simulation systems. NPCs can interact with objects throughout the world, follow daily routines, and react dynamically to their surroundings, making Bethesda’s open-world games feel more alive.

The Evolution From Gamebryo

Some players noticed that Sawyer referred to the engine used in Fallout: New Vegas as Creation Engine, even though the game was originally built using Gamebryo.

The explanation is fairly straightforward. Creation Engine evolved directly from Gamebryo after Bethesda extensively reworked the technology. Because of that shared foundation, many core systems remain similar, including item interaction, open-world rendering, NPC behaviors, and scripting systems.

These technological similarities explain why Bethesda’s RPGs have maintained their distinctive gameplay style across multiple generations while continuing to support one of the most active modding communities in gaming.

Fallout: New Vegas is available now for PC and consoles.