One of the key problems is making sure the guys don’t look like idiots, and doing what you want them to. Developing this kind of FPS is no longer about being alone in the world - it’s about developing a team-based singleplayer game and making the Al believable, plausible and fun. The first of these is getting your team to do what you want. 'When we started work on Condition Zero, we found that there were two approaches to solving the problem of a command interface. During a lull in the action, I took the opportunity to ask how you, as the commander of your team of special forces soldiers, would be able to interact with your comrades. I watched for a while as a manic bot-filled firefight kicked off on one of CZ’s impressive-looking new levels, where shards of debris flew off every surface as mis-aimed bullets thudded into walls. speaking to a pair of buck-toothed Ren and Stimpey lookalikes. Standing in front of me, was the man himself, Mr Randy Pitchford, not a bazooka-toting behemoth, but an affable enthusiastic man. Suddenly it appeared, looming from the greyness like a beacon to the lost, drawing in slack-jawed observers like fireflies to a lantern.

Visibility was down to a minimum as I eked my way through swathes of bodies, matted together with sweat and spilt coffee towards the Gearbox stand showing Counter-Strike: Condition Zero, the single-player version of the greatest online shooter of our time.

My mission - to track down legendary developer Randy Pitchford, who, it was rumoured, was as big as a giant and had a rocket launcher for an arm. Throngs of pallid, under-nourished journos shunted their way from one room to the next as Hill and I peeled off in opposite directions. After four and a half hours, we arrived at the grandiose building, and were promptly ushered out of the vehicle by clucking Frenchmen towards the galleries housing a host of VU Games developers demonstrating their wares to the press.

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