Inside and Limbo developer Playdead is teaming up with iam8bit and RealDoll — yes, the company that makes life-size sex dolls and other sex toys — for a collector’s edition that’s full of mystery. The $375 package includes a physical copy of Inside for PlayStation 4, Steam codes for Inside and Limbo, and, according to iam8bit, “other stuff.”

It’s not clear what RealDoll’s part in this collaboration is just yet. The parties involved are keeping the contents of the collector’s edition a mystery. “We will NOT tell you what it is,” the product listing on iam8bit’s store reads. “Maybe it’s what you’re thinking… maybe not. We can confirm that there are several items included, one of which is a PlayStation 4 game disc. The rest is up for speculation.”

One thing is easy to rule out, however. The collector’s edition probably won’t include one of RealDoll’s infamous sex dolls; those start at $3,999. RealDoll sells sex toys and accessories, as well, so perhaps there’s a fleshy body horror toy included in the package. Suffice it to say, if there’s not something intentionally fuckable in the collector’s edition, someone screwed up.

Pre-orders for the mysterious Inside collector’s edition go live Thursday, March 8, at 7 a.m. PST and come to an end on Friday, June 8, at 11:59 p.m. PST. The item will ship worldwide and is expected to arrive during the first quarter of 2019. That’s also when iam8bit, Playdead and RealDoll plan to actually reveal what’s inside the package.