shader effects?

can someone clue me in - on this site:

http://www.pompomgames.com/mutantstorm.htm

the screenshots along the side - did those effects require custom shaders? or can i do something like that in blitz3d? i'm talking about all the glowing effects on the screen.

Looks easily do-able in blitz

Additive mixing is your friend. Take a look at some of the 360 shooters being made here to see some glow effects made by making images with a built in glow, and then using additive mixing.

Is there a way to do shader effects in blitz?

360 shooters being made here

where?

well, there is gridwars by Mark1nc:
http://www.blitzbasic.com/Community/posts.php?topic=56902

and this one from Wiebo
http://www.blitzbasic.com/Community/posts.php?topic=55520

And one from myself here:
http://www.blitzbasic.com/Community/posts.php?topic=55354