Because Icarus uses the Unreal Engine, small patches can sometimes trigger massive 50GB+ file re-verifications. Community members often discuss manually "rar-ing" or compressing their game files to save space or share patched files with friends who have slow internet.
This is the most common use. Players of the survival game Icarus often share as .rar or .zip files. Icarus.rar
Or are you just trying to due to the game's large update sizes? RaGEZONE - MMO Development Forums Because Icarus uses the Unreal Engine, small patches
These files usually contain "Quality of Life" improvements like faster movement, increased carrying capacity, and "no weather" patches. Because Icarus uses the Unreal Engine