The Tenchu series, which includes titles like Tenchu: Stealth Assassins and Tenchu 2: Dark Secret, has garnered a dedicated following for its intricate stealth mechanics and rich historical context, often drawing from the ninja lore of feudal Japan. Tenchu San Portable, as a portable iteration, aimed to bring this experience to the PSP, featuring new missions, characters, and gameplay mechanics optimized for the handheld console.