We've written about scifi author Rudy "Postsingular" Rucker's forgotten 1980s classic The Sex Sphere before — it's the novel where a bunch of hypermatter creatures take the forms of blobs with breasts and genitals and try to conquer Earth. It almost works, too. Everybody gets so into having sex with the blobs that they become obedient alien slaves. Luckily, our heroes figure out a way to deal with the genitacular menace using extremely complicated math. Long out of print, the book is now about to be reborn as a print-on-demand deal. And Rucker has just released a picture of the book's new cover, which he painted himself. Check it out below (NSFW) — it must be seen to be believed.

That's a sex sphere alright.

Rucker will be offering his novel Spacetime Donuts as a print-on-demand book too. Both should be out this summer. We'll let you know as soon as the URLs exist.

The Sex Sphere, etc. [Rudy's Blog]