Searching for a usually means you're looking for a way to play this co-op classic on modern hardware or original consoles. While the game was originally a digital-only release on the PlayStation Network, finding a reliable "ISO" (or more accurately, a PKG file for PS3) involves navigating a mix of official stores and community preservation efforts. The Direct Answer: Where to Get It
If you are downloading a "complete" ISO or buying the game, ensure you have the DLC. The PS3 version actually includes some DLC from the Xbox version for free, but much of it remains separate.
For those using emulators like RPCS3 , users often look for "NoPayStation" or archive-based PKG files. We cannot provide direct links to pirated content, but searching for the game's Title ID ( NPUB30456 for US or NPEB00539 for EU) is the standard way to find community-verified files. Game Overview: Why It’s Still Popular