I know how to recreate this effect but I'd have to charge ya

Or at least trade for something cool...
...see it is an old tradition passed down from generation to generation.
An exclusive technique that requires specialized tools.
It is an alchemical process for which I will be ostracized if I make known to the public, so you must understand that I have to be careful about how I describe it...

...but hypothetically if I was to do this look, I would start in the current version of Illustrator. Theoretically.
I would "hypothetically" make the primary shapes and add a glow.
This "asset substrate" would then be hypothetically transferred to a specialized tool called "Jasc Paint Shop Pro 7" (circa 2003) where upon "evaporating" a 256% color concentrated solution in graphics interchange format, these bizarre dither patterns and random dots will appear.
This "feature" can be found in much of my very first attempts at "pixel art" which one could theoretically see specimens of if they were so inclined...

2003!

A-hem... these are not mine... ...they... ...these must be from somebody else's hard drive... I don't know how they got on my hard drive I swear... I don't know what you're talking about...
...I was holding these for a friend...
But for sake of science...
Exhibit A:

(notice the similar color blend gradient to the white glow of the shapes)
Exhibit B:

(compare the "additional" dithering patterns on the concrete to your grey tiles)
Any more than this I am not at liberty to discuss, sadly.
