Are you telling us how to install install libgconf-2.so.4? 
Ah, you’re asking us a question. 
XY Problem detected: You’re asking about your attempted solution rather than your actual problem. This leads to enormous amounts of wasted time and energy, both on the part of people asking for help, and on the part of those providing help.
Please edit your topic title to be clear and concise about the actual issue and edit your first post to give us more details. What games? Are you using Steam, Lutris, Heroic Launcher, etc.?
Please see: