I opened the door to the stairwell and found myself face to face with a trio of living dead. With a weapon in each hand, I did my best to fend them off — but even as I dispatched his brethren, one broke through my defenses and, with a touch, made me one of them. “Humans vs. Zombies,” a sort of team-based marathon game of tag, has become a popular activity on college campuses since Brad Sappington and Chris Weed did it at Goucher in 2005. The full rules are available at humansvszombies.org, but while we’re taking inspiration there for a new activity, The Sopris Sun is changing things up.