Volumetric light

Hi I am trying to do volumetric light as shown in the picture but with unity free there’s quite a lot of restrictions. I tried with directional lighting but it doesn’t show like the picture as shown. Could anyone advice me on how I could be doing this with unity free? I’m really in need of help. Thanks.

Vlights is awesome and works with Unity Free, provided you don’t need the shadow to update dynamically in game.

I want the same effect. Solved it using lens flare and this video helped me a lot to get volumetric effect. - YouTube