PORTAL 2
It’s been eight years since Valve released a singleplayer game. Hopes of seeing the Half-Life series completed have all-but vanished, and we’re unlikely to see another Left4Dead or Portal. Yet while Valve the developer may have turned toward enormously successful MOBAs and enormously unsuccessful card battlers, its last great singleplayer game still has a surprising amount of life left in it, courtesy of its community.
Since made its debut in April 2011, the community has designed more than half a million custom test-chambers, with dozens of new chambers being added every day. The majority of these are singleplayer chambers (although that still leaves over 100,000 cooperative chambers if you and a buddy have got a lifetime to kill). It’s an enormously prolific community, to the
