A tower defence game that offers much more than the usual fare, with multiple upgrade paths, many maps, keyboard shortcuts and comination attacks. More information here:

http://onslaught.playr.co.uk/about.html

2008-09-10: Updated, new Targeter turret, modding interface, some bug fixes and other tweaks.

2007-10-30: Updated: New combonly turret, bug fixes, challenge modes, some speed enhancements.

2007-08-30: Updated: Now with sound, more weapons, shared maps, tons of bug fixes and efficiency improvements, targetting mode, new keyboard commands, heaps of stuff!

2008-04-12: Updated: New turret, directional targeting, bug fixes, some performance changes, revised keyboard shortcuts