This game was made by Matthew Bedder (bedder), Christian Guckelsberger (cguckelsberger), and Nick Sephton (tbigfish)for the first IGGI Games Programming module at Goldsmiths, University of London.
The main chunk of code for this game was made over the course of a week, so is in a bit of a sorry state.
(Christian is going to be ever so kind and write this bit)
(Christian is also going to fill this in. I hope.)
This game has been ported to Unity 5.1 by Matthew Bedder, with this version being found on the aptly-named "Unity 5" branch. This variation has a revamped UI, has replaced the explosions with particle systems, has added particles to the chargers, has has generally better lighting and materials, and is slightly rebalanced.
It also probably has a load of bugs.
Web builds of this branch can be played here for a Unity Webplayer version, and here for a WebGL version. The WebGL one is a bit buggy, but is largely playable.