A: Namco Super Wars (mobile, Japan only) or Project X Zone (3DS). Pac-Man appears in both.
You would download the base game (often a "demo" or "trial") for free. The file size was tiny—usually under 500KB. Within this demo, you could see the locked characters, but you couldn't select them. To unlock the full game, you had to purchase a from a web portal or via SMS text message. Namco All Stars Pac Man Activation Code
Namco All-Stars Pac-Man is a legacy native port for Windows (and briefly Steam/Facebook) that offered both classic and "Enhanced" versions of the game. Finding a valid activation code for this specific version today is difficult because it has been largely discontinued and delisted. A: Namco Super Wars (mobile, Japan only) or
You can sometimes find physical copies or unused digital keys on eBay or other resale sites. The file size was tiny—usually under 500KB
: A historical keygen exists for Namco-licensed ports on older handheld devices (like Palm OS), which generated 5-digit registration codes based on a device's HotSync ID, but this is not compatible with the Windows "All-Stars" version. Alternative Ways to Play Pac-Man
What makes this version unique is its departure from the rigid arcade original to be more accessible for home PC users: