Look for Setup.exe or Kvizpart_Installer.exe . Do run the game executable directly before installation.
If you have slow internet, downloading a 10GB repack instead of a 40GB original installer is a lifesaver. kvizpart repack
If you are looking for compressed software or games, it is highly recommended to stick to well-vetted, official sources. Downloading Games From Repacks: A Beginner's Guide - Ftp Look for Setup
Some original quiz games lose server support or require always-online DRM. Repacks like Kvizpart’s often disable these checks, making the game playable indefinitely. making the game playable indefinitely.