SiMPLEX releases are known for being "stripped" or "highly compressed," often removing unnecessary language files or cinematics to reduce download size without affecting the core gameplay.
Depending on the package, you will either run a setup.exe or simply launch the game directly via the Picklock.exe .
Inside the archive, you will likely find a SiMPLEX.nfo file. This text file is the group's "calling card," containing installation instructions, technical specs, and sometimes a stylized ASCII art logo. Installation Instructions