Innovative tower defense. Create system od defense nodes and prepare for waves of enemies. It's freeplay game, it has no end - it's about earning more points. Enemies are getting harder, as you progress.
You can play at: http://pulsespace.clay.io/
Some screens:
<img src="http://clay.io/games/pulsespace/claymedia/2195.jpg" border="0">
<img src="http://clay.io/games/pulsespace/claymedia/2196.jpg" border="0">
<img src="http://clay.io/games/pulsespace/claymedia/2197.jpg" border="0">