The is approximately 75 GB , which is the official storage requirement listed on Steam and the Epic Games Store . While the initial download file you pull from servers may be smaller due to compression—often landing between 43 GB and 65 GB depending on the storefront and latest patches—you must have at least 75 GB of free space available for the game to unpack and install successfully. The Callisto Protocol PC System Requirements
Interestingly, the PC version is significantly larger than its console counterparts. For comparison, the only requires roughly 43 GB of space. This discrepancy is largely due to: callisto protocol pc download size
It is common for users on Steam to see a download size closer to , as the platform uses efficient compression to reduce data usage. However, once the game is fully patched with the latest updates (such as version 1.05 or higher), the total footprint on your drive will solidify around the 75 GB mark. Players who have purchased the Digital Deluxe Edition or Season Pass should expect additional space requirements for DLC content like the Final Transmission story expansion. Why Is the PC Version Larger Than Consoles? The is approximately 75 GB , which is
The PC version includes uncompressed 4K textures and high-fidelity assets that allow it to scale for high-end GPUs. The Callisto Protocol™ on Steam For comparison, the only requires roughly 43 GB of space
Modern consoles like the PS5 use proprietary compression (Kraken) that is often more efficient than standard PC file structures.
Meeting the storage requirement is only half the battle. To ensure the game runs smoothly without the stuttering issues reported at launch, developers at Striking Distance Studios recommend using a Solid State Drive (SSD) rather than a traditional hard drive. Minimum Requirements Recommended Requirements Windows 10/11 (64-bit) Windows 10/11 (64-bit) Processor Intel Core i5-8400 / AMD Ryzen 5 2600 Intel Core i7-8700 / AMD Ryzen 5 3600 Memory Graphics NVIDIA GTX 1060 / AMD RX 580 NVIDIA GTX 1070 / AMD RX 5700 DirectX Version 11 Version 12 Storage 75 GB available space 75 GB (SSD recommended) Download vs. Installation Size
