I participated in a two hour play test of Sasquatch Game Studios Primeval Thule Campaign Setting with Pathfinder. Our band began as slaves in an Elven city-state arena, from which we escaped with the help of a rampant purple worm and the uncovering of hidden catacombs underneath the arena floor. The atmosphere was much like a Lovecraftian dark version of Robert E Howard’s Hyperborea.
The playtest included some experimentation with alternative rules dealing with the Lovecraftian horrors we encountered in the catacombs. They were effective and, characters could interactively improve their trait during the adventure – though its much easier to lose them!
The game also introduces at least one alternative PC race, plus a sort of traits system that made backgrounds interesting without much complexity.