This is a project which simulates chain neutron decay of uranium. Opening this program you'll see metal crystal lattice: uranium atoms (orange ones), neutrons (white ones), other atoms aren't shown.
U-235 + n ===> Ba-144 + Kr-90 + 2n + about 200 MeV U-235 + n ===> Ba-141 + Kr-92 + 3n + also about 200 MeV 
cmake SDL2 'q' - exit