If you want to see for yourself get a cheap pair of sunglasses and knock out one of the lenses. That's all these are really. Darkening one eye tricks your brain into seeing 3D depth. The effect is dependent on parallax scrolling. Works very well with Darius as you get a giant parallax layer with lots of sprites all going the same way at a different speed.
OMG, I honestly forgot all about this. I am totally going to try this.
I actually started writing an article about 3D Jim Power on SNES/Genesis/etc. years ago....and I was speculating if this was simply Pulfrich Effect (even though all advertising was using the Red-Blue lenses...HOLY SHITE I BOUGHT SNES JIM POWER IN HOPES OF GETTING THE GLASSES but I can't remember if I got them.
I know you don't care about this but I think the reason I took a break from he article was because I was trying to find stupid SNES Jim Power glasses ($00.02 item).
UPDATE:
JASON BATEMAN IS JIM POWER. Jim Power Wallpaper....never finished writing content. Sadly, I can't find any of my notes on the SNES game....and this article was an early version because I don't mention Pulfrich a Effect vs. Red-Blue Lenses....
it's called the pulfrich-effect and works with every game that features horizontal parallaxes.
i did that already back in the 80s when i played c64 and amiga games.
btw. back then, i accidentally found out about that effect by myself
http://en.wikipedia.org/wiki/Pulfrich_effect
Yes, I remember you folks explaining this years ago, now! I can't believe I forgot.
Damn senility.