Okay, almost the entire show takes place in a sterile-looking compound, so this is guaranteed to be a rather bland-looking episode. But, despite this and the lack of a lot of action in the show, it stands out as one of the best episodes because it is so well-written and has an intriguing message. It seems that the Enterprise visits a new planet while they are being attacked by their enemies on a nearby planet. However, despite the landing party hearing the warnings, the see, hear and feel no evidence of attack. It turns out that the attack is a computer simulation and the ship (but not the landing party) are determined by the computer to be casualties in this bizarre game. However, despite not being real, this really is no game. You see, the two planets completely hate each other and would have completely annihilated each other with their high-tech weapons countless decades before had both sides not agreed to stop fighting a conventional war and begin fighting a computerized one. The logic was that BOTH societies could be preserved and the "victims" could be humanely euthanized to make the war more tolerable!!! This sick arrangement seems natural to the planet's inhabitants and they cannot understand why the crew of the ship refuse to report to the disintegration chambers in order to preserve the precarious balance and avoid a real all-out war!!!! The episode is exciting, thought-provoking and features an excellent performance by guest-star David Opatoshu--an exceptional character actor who was a frequent guest on TV (such as his great role in one of the hour-long TWILIGHT ZONE episodes).