If you explain more about what you want to do in your game, I can explain the effects. I studied electrocution and it's effects on the body in college (electrical engineering.) Some of the answers yesterday were wrong.

In particular, the human skin is a great insulator. The most effect way to electicute someone is to prick both of their fingers and connect those to a small voltage AC current (it only needs to be a couple of milliAmps) at 60-100 Hz which will induce fibrillation. To get through the skin you need a much higher voltage. DC can burn flesh, but it needs to be very high.

Any way you look at it you need a path through the body. Static electricity is a possible way, but it would have to be a device with insane voltage and and amazingly high charge.

I don't know how detailed you want to get.