Delivering a good visual experience on mobile devices remains a significant engineering challenge: limited GPU power, stricter memory bandwidth, and tighter thermal constraints all threaten to undermine the game's signature smooth frame rates and high-fidelity visuals. To combat these challenges, Epic Games is partnering with Arm to integrate Arm's Accuracy Super Resolution (ASR) upscaling technology into Fortnite Mobile, also being the first ASR-enhanced title. Rather than overhauling Fortnite's existing rendering pipeline, Epic is embedding ASR through a dedicated Unreal Engine 5 plug-in, which will be compatible with both Android and iOS devices. By leveraging a temporal upscaling approach, which is rooted in AMD's FidelityFX Super Resolution 2 framework, ASR analyzes multiple frames to reconstruct a higher-quality image.

Early demonstrations at GDC 2025 showed that devices using Arm's Immortalis-G720 GPU can achieve up to a 53% increase in frame rates while reducing power consumption by approximately 20%. Consequently, gamers can look forward to longer play sessions without worrying about overheating or excessive battery drain. For Fortnite players, ASR's integration translates into noticeably sharper textures in fast-paced encounters, crisper detail when surveying distant environments, and fewer visible artifacts overall. Importantly, these improvements are achieved without sacrificing artistic intent: Epic's artists and engineers retain full control over color accuracy and visual effects, even as the game renders at a lower internal resolution. Tests in collaboration with MediaTek further confirmed similar power savings on Dimensity 9300 chipsets, addressing one of the most pressing mobile concerns: battery life.