You can buy the game on the Steam Store , which is the primary legitimate source for downloads and updates.
Rewards for Hidden and Karma missions were increased to match procedural missions. Grey Hack Free Download (v0.7.4120)
The game is lightweight and designed to run on most modern systems: Ubuntu 18.04+, CentOS 7, or macOS Mojave 10.14+. Processor: x64 architecture with SSE2 support. Memory: 512 MB RAM. Storage: Approximately 545–560 MB available space. Grey Hack - Steam Community You can buy the game on the Steam
Updates included improvements to the in-game Notepad and CodeEditor. Grey Hack Free Download (v0.7.4120)