A small laser projector for aligning stuff. Place it on the ground, rotate, set color and range.
Providing the player with new tools or adjusting the game interface, without fundamentally changing gameplay.
Looks nice, small question did ya craft the graphic your self if so I would love to see a graphical mod of it for the laser turret. ^_^
It's rendered with ray tracing and CSG, same basic approach as my other recent mods. Simplistic models but with a nice glossy result imo.
A defence reskin sounds fun... but time consuming :)