Lutris is a game manager that can be run on Manjaro and other Linux distributions, and it does its job incredibly well. It has thousands of games in its catalog and works with very little fuss, allowing you to install games from the cloud and keep them up to date. Most games are "one click install" titles, meaning that you shouldn't have to worry about fiddling with extra configuration to get a Windows game working on Linux. It just works.
This is a companion discussion topic for the original entry at https://linuxconfig.org/install-lutris-on-manjaro