Diggz Team

No controller yet haven't made it that far when I click on nintendo for example system asks to install internet archives game launcher would you like to down load this add on yes or no I clicked yes then I get and error download and on not able to click on game systems

On the diggz xeon build how can I play the games on the arcade side addon or how do I set it up ,new to this build is there a setting process I need to do ?