The original manga by Masamune Shirow is available for digital purchase and offline reading on multiple platforms:
Unfortunately, these games are abandonware, meaning they are not available for legal digital download on modern consoles like PS5 or Xbox Series X. Your only option to download these is via emulation. Legally, you can only emulate a game if you own the original physical disc. However, for modern gaming, keep an eye on the Ghost in the Shell: First Assault —an online FPS that was shut down but occasionally sees revival rumors. Download Ghost in the Shell
To download Ghost in the Shell: Stand Alone Complex , you have two primary options: The original manga by Masamune Shirow is available