Steam keys are often available at discounted prices on platforms like Gameseal (~$23.99), G2A , and DLCompare . System Requirements
You can purchase and download the game directly from the MADNESS: Project Nexus Steam Store page for ~$24.99. A free demo is also available on this page if you want to try it before buying. Download Madness: Project Nexus PC Game
The original " Project Nexus Classic " can be played for free on Newgrounds . Since Flash is no longer supported by most browsers, you may need the Newgrounds Player or Flashpoint to run it. Steam keys are often available at discounted prices