is Light per-pixel lighting only in pro?

I am tyring to make a game with a circular light and i always get a weird hexagon shape. I was told that i should use per-pixel lighting. i couldn't find per-pixel and i found it on unity.com and its listed under the render mode as imortant, and in my render modes it isn't there. so is it only in pro or is it not in 2.6? Is it the same as force pixel?

I'm rusty on this, but two things come to mind: use a pixel rather than a vertex shader, and/or use light baking.

you would be better off baking the lighting to save on resources. Per pixel lighting can take alot of resources and not everyone is running a super computer