Treyarch's Phil Tasker, Alex Conserva, Dan Bunting, and "Lvl 1 N00b" David Vonderhaar (in costume, with a cardboard nameplate above his head and a full-sized Trollface mask) took the stage at Call of Duty XP this weekend to do a behind-the-scenes talk on Call of Duty: Black Ops' multiplayer game, showing off some work-in-progress and unreleased maps, and answering players' questions about the game. Their well-scripted talk was interesting, though perhaps because most of the show is about the next game in the Call of Duty series, they didn't end up going too in-depth on production secrets.

They did, however, explain a little bit about the way multiplayer maps were created for the game. Initially, the developers just sit down with pen and paper to design the map and the flow, and then the map goes through a series of playtesting stages, starting out with temporary art and textures, and then moving on to more tweaks and details as time goes on. The "Summit" map was shown off throughout this process -- it started off as just two buildings on a rooftop, with an open path between them, but over time, the developers tried to open the map up a little more, and really show off to players that they were on a high mountaintop.