ReactorCraft is a mod that adds realistic nuclear reactors, both fission and fusion, to Minecraft.
This mod depends on RotaryCraft - it cannot be installed without it. Here are some of the ways in which realism is simulated:
The physics is simulated in such a way as to reflect reality, including real values for energy creation per reaction
The reactors (a large multiblock) have to be built in a way that reflects real reactors, with strategic placement of fuel rods, control rods, and other reactor core components
Realistic reactor behavior in the event of poor design, including possible meltdowns, hydrogen explosions, and radiation leakage
Realistic (though obviously simplified) control systems to manipulate control rods, feed fuel, and the like
The fuel is created realistically - including enrichment - and used realistically; users must manage things like spent fuel with spent fuel pools
