Because the core trilogy relied heavily on the unique PlayStation Network infrastructure and cell processor architecture of the PS3, official native ports to PC never happened. Beware of Malicious Download Sites
You need a PlayStation 3 emulator to run the game. RPCS3 is the best open-source software for this task. It translates PS3 code into Windows-compatible instructions. 2. Install PlayStation 3 Firmware Emulators require the original console system software. Visit the official Sony PlayStation website. Download the latest PS3 System Software update. Install this file directly into RPCS3. 3. Acquire the Game Files You need the game data to play. Blu-ray ripping is the legal method. Insert a PS3 game disc into a compatible PC Blu-ray drive.
like Reddit’s r/rpcs3 to ensure you are using safe, legal methods.
Ultimately, while the dream of a free, full-version LittleBigPlanet download for PC may be tempting, the reality is that the safest and most reliable path is through official channels like Sackboy: A Big Adventure or the challenging but rewarding world of emulation. The unofficial "free download" websites are a dangerous dead-end.