Relive the events leading to the major disaster of a soviet nuclear power plant, fullfill your duties to test and operate the power plant and then do what it takes to survive and attempt to stabalise a catatrophic events leading to the power plants meltdown.

Play the part of many heroes involved in the incident from inside the plant and outside, fighting fires, using control systems and putting on some dive gear to drain the pool beneath the reactor.

It's your job to be the heroes that fought well to prevent the Chernobyl disaster from being a far deadlier world wide nucelar disaster.