There is no official version of Sleeping Dogs for the PlayStation Portable (PSP). The game was originally released in 2012 for PC, PlayStation 3, and Xbox 360.
However, if you are searching for "Sleeping Dogs PSP ISO highly compressed," you are likely finding one of two things: a fan-made mod or a highly compressed version of a similar game. Here is everything you need to know about these files and how to safely play similar titles on your handheld. The Reality of Sleeping Dogs "PSP" ISOs
Kurohyō: Ryu ga Gotoku Shinshō (Yakuza: Black Panther): A martial-arts-focused open-world game set in the Yakuza universe.
"Sleeping Dogs" is an open-world action-adventure game developed by United Artists and released for the PlayStation 3 and Xbox 360 consoles. The game's PSP port offers a similar experience, with a rich storyline, engaging gameplay, and impressive graphics. However, the large size of the game poses challenges for storage and distribution. To address this issue, developers have employed various compression techniques to reduce the ISO file size while maintaining acceptable performance.
Modded Files: Some downloads are just GTA: Vice City Stories or Kurohyō: Ryū ga Gotoku Shinshō (a Yakuza spin-off) with a different title screen. 🎮 Best Alternatives for PSP/Handheld
These techniques resulted in a highly compressed PSP ISO, with a file size reduction of approximately 70%.