Avoid Chinese "retro game" clones. The Retro Knight PSP is built from a real Sony motherboard. If it doesn't start with a Sony logo, do not buy.
The PSP had a vibrant homebrew scene (e.g., Cave Story port, DaedalusX64 ). “Retro Knight” could be an unreleased or niche emulator front-end, a game (possibly a platformer with a knight protagonist), or a custom firmware theme. retro knight psp
: A "strange and unlike others" action game where you turn enemies into undead soldiers to fight alongside you. The "Retro Knight" Hardware Connection Avoid Chinese "retro game" clones