- [you need some knowledge about electricity to play this game]
- [Use known Value and formulas to make voltage value or current value be constant]
- [Drag right item in right place to make the circuit perfect]
- [If you make this game all finished, you can solve questions about circuit of high school physics easily]
- [This is a difficult game, so you need to think about if you realy want to play this game before you buy it]
