Thieves of Time
Cthulhu Dark is a tabletop roleplaying game of cosmic horror, in the style of H.P. Lovecraft.
Rules light, like roll a six sider, that is how well you did, a six gives you a glimpse of that which ought not be known, are the rules.
It's about the things we fear, amplified until they are unbearable. It's about stories that genuinely creep you out, not well-worn tropes and creatures you've seen hundreds of times before.