I found this game pretty funny! I included it in part 22 of my Cyberpunk Jam compilation video series, if you want to check it out! http://youtu.be/D4qsWt0lXyQ

Thanks for sharing a thought, and yup, these guys are stealing batteries. I wanted to use something different to casual hearts to represent remaining lives. 

If I got it right, energy got depleted when those guys left screen and not by dog flying right? It wasn't entirely clear, and could have used some explaining