Pearl Abyss Explains Why Crimson Desert Stayed With BlackSpace Instead of Unreal Engine 5

Pearl Abyss has explained why Crimson Desert was built around its proprietary BlackSpace Engine rather than moving to a commercial engine such as Unreal Engine 5. For the studio, the decision centered on maintaining direct control over technology, development schedules, and future features instead of depending on updates from an external engine provider.

Speaking during a gamescom 2026 interview, Pearl Abyss Lead Engineer Jin hwan Kim and Game Engine Graphics Division Senior Leader Jin ho Yoon explained that the company already had extensive experience developing its own technology through Black Desert. Moving Crimson Desert to an external engine would therefore have meant changing a development model already deeply integrated into the studio.

The developers acknowledged that commercial engines provide strong tools and considerable convenience, but said Pearl Abyss did not want its core development capabilities to depend on external technology. More importantly, the studio wanted to implement features according to its own schedule rather than potentially waiting for an engine provider to deliver required functionality.

"We wanted to maintain better control over the process."
— Quote by: Pearl Abyss

That control has become particularly visible since Crimson Desert launched. Pearl Abyss said owning the engine allows its developers to implement changes quickly, even though updates still involve technical challenges and internal bottlenecks. The studio believes this gives it a speed advantage compared with relying on standardized commercial technology.

Crimson Desert has received an unusually active stream of updates since its March 19 launch. Recent releases include Patch 2.03.00 and its updated DLSS Ray Reconstruction implementation, while Pearl Abyss is preparing Charting the Unknown for October 15. The expansion will broaden the game with naval exploration, underwater environments, additional stories, and new gameplay systems.

BlackSpace itself was designed to avoid one of the limitations Pearl Abyss encountered with its older Black Desert technology. The previous engine became heavily specialized around a single MMO, making it increasingly difficult to adapt for different genres. BlackSpace was instead developed with broader platform support and different types of games in mind. Pearl Abyss believes the technology could eventually support projects ranging from open world games to FPS and TPS titles.

The engine also carries technology specifically developed around Crimson Desert's large environments. Pearl Abyss has previously demonstrated features including simulated shallow water, volumetric fog, GPU based cloth and hair simulation, atmospheric scattering, and optional ray tracing. The studio has also acknowledged that optimization remains an ongoing challenge, particularly when scaling complex lighting and large scenes to weaker hardware.

Pearl Abyss is not arguing that Unreal Engine 5 or other commercial engines are inferior. Its reasoning is much more practical. The company already had the engineers, tools, and experience required to control its own technology, so giving up that independence would have introduced a new dependency without necessarily solving its development needs.

The tradeoff is cost. Maintaining a modern engine requires engineers working continuously on rendering, platform support, optimization, tools, and new hardware. For many studios, Unreal Engine makes considerably more financial sense. Pearl Abyss has decided that owning those systems is worth the investment because it can modify them whenever Crimson Desert or a future project requires something new.

With so much of the AAA industry consolidating around Unreal Engine, BlackSpace also gives Pearl Abyss something increasingly uncommon: a technology stack designed around its own games rather than adapting its games around someone else's engine roadmap.

Do you think more large studios should invest in proprietary engines, or does the flexibility of Unreal Engine make more sense for modern AAA development?