Asteroids + Geometry Wars... that really does sum it up
10 Shoot Stuff
20 Die
30 Goto 10
It's as simple as that...
It really does have an old school arcade feel to it. The graphics remind me of the spawn of Asteroids and the old Voodoo Lights screen saver. It's fun, and for a free game, the value is unbeatable. It's worth checking out if you dropped a lot of quarters back in the 80s.
I've not played any Binary Zoo Studios games before, but I might just check them out now.