Learn how War Drum Studios used Unreal to optimize 100 GBs of asset usage in ARK: Survival Evolved to just 2 GB on iOS. All while providing a high-fidelity experience with good frame rates with optimized materials and vastly different content techniques.
https://dev.epicgames.com/community/learning/talks-and-demos/V59/ark-on-ios-leveraging-ue4-for-98-content-reduction-unreal-fest-europe-2019-unreal-engine