Black Mesa: Xen - Opening Minutes (HALF-LIFE 1 REMAKE),Gaming,PC,IGN,xen,gman,g-man,games,remake,Shooter,Gameplay,half-life,community,black mesa,fan remake,Black Mesa,gordon freeman,crowbar collective,Crowbar Collective,Take a look at the opening six-or-so minutes of Black Mesa: Xen, the brand-new