Prototype 2 requires approximately 10 GB of disk space and modern hardware (like an NVIDIA GeForce 8800 GT or better). The original Game Boy hardware cannot process the 3D graphics, physics, or AI of a modern open-world game.
NVIDIA GeForce 8800 GT with 512 MB RAM or ATI Radeon HD 4850 Storage: 10 GB available space 3. Common PC Issues and Fixes prototype-2-pc-game-highly-compressed-gameboy
If you are looking to play the actual PC version, these are the confirmed minimum specs from System Requirements Lab : Windows XP / Vista / 7 Processor: Intel Core 2 Duo 2.6 GHz or AMD Phenom X3 8750 Memory: 2 GB RAM Prototype 2 requires approximately 10 GB of disk