I highlighted Rats in the Walls back in March, however since then it's received more love and attention with the inclusion of new illustrations by Tithi Luadthong, and a few rules revisions (along with some good reviews).
Rats in the Walls: A Roleplaying Game of Cosmic Horror by @AlexandreJ is a relatvely minimalist d6-based RPG rules set available in PDF from DriveThruRPG (with a print edition promised via Lulu). You can pick up the digital edition for about $6 USD.
The art-free version is still available under "pay what you want".
Be part of the discussion about this game in our forums.
Rats in the Walls
Rats in the Walls is a roleplaying game of cosmic horror, inspired by the writings of H.P Lovecraft (but it doesn't use HPL's Mythos).
- The game system is inspired by classics like Advanced Fighting Fantasy, Traveller and more recent titles like Maze Rats or Into the Odd. It uses 2D6 and only the players roll the dice so the GM can focus on the players' choices.
- The system is aimed at long-term play but works very well with one-shots as well.
- The default setting are the roaring '20s but an appendix allows you to create medieval characters.
- Grab a character sheet, 2D6, pick a profession and a reputation and go fight the Old Ones or die screaming.
This is the revised, fully illustrated edition.