Update (August 3, 2017): I did a better tutorial for the game to avoid confusion. Hopefully, people would get the mechanics of the game. I also fixed a sound that screeches the audio, and added something at the menu that shows your rank when you submit a score.
Make a positive battery inject to a negative battery, then emit them with your power. The other battery may produce baby batteries afterwards. But they also need to be destroyed with a positive charge before the next intercourse.
Made for the Ludum Dare 39 (Compo, with the theme of "Running out of Power").