So, I thought I covered just about every PDQ product out there, but it turns out I missed one: Adventure Into Darkness. It's a sourcebook for "Lovecraftian Comic Books" using the Truth and Justice system. Unfortunately I'm not able to give my usual summary/pitch for it because I only found out it existed yesterday!
Who knows maybe there's more PDQ products out there that I've missed, I'll look forward to finding out and possibly having a PDQ Week 2 sometime. In the meanwhile I'm working on my own PDQ books, not just Battle Royale but also a set of rules for playing horror games in PDQ. I'll keep you updated as they progress.