OK so you have to press the green flag and then press the fission button to learn how it all works then the simulator button to simulate how a fission reactor works. Kinda it isnt perfect but is a general explanation full of bugs. DO THE FISSION FIRST CUZ YOU CANT MAKE IT BACK AFTER STARTING THE SIMULATION
if you melt down then lol sucks to be you it stops the game entirely cuz you XX How to make power: turn on the generator pump and allow the water to fill the reactor and boiler, then turn on the reactor, use the arrow keys to raise and lower the control rods, higher they are the faster the reaction happens. WARNING! if you go above 1200 ish degrees in the reactor the control rods melt causing the reactor to go critical and immedietly boiling all of the water and boom