Teach analog electronics in Minecraft: resistors through transistors, a full 3-phase system, three trading villagers, AC/Bode analysis, and a real MNA circuit solver (SPICE-family). Check https://github.com/rpicos-uib/circuitsimcraft.
Oscilloscope viewing a RLC filter using a triangular waveform as the input.
Oscilloscope viewing a RLC filter using a square waveform as the input.