Caterpillar Pac-Man Hack is a modified version of the classic arcade game Pac-Man. Details about its origin and creator are scarce, characteristic of many ROM hacks. Gameplay retains the core Pac-Man mechanics but likely features altered maze layouts, enemy behaviors (the ghosts or 'Caterpillar' element), and potentially scoring systems.  The 'hack' suggests unauthorized modification of existing game code. There is no known official developer or release information; it exists within the community of arcade game enthusiasts and ROM hackers.