Cthulhu Dark (Original Version)
Horror (Cthulhu Mythos) Modern
Description Based (Narrative more so than Dice) Dice (Primarily d6) Roll and keep (4k2 means roll 4 and keep 2)
The rules are fun and incredibly minimal: they fit on one sheet of paper. You don’t need a character sheet to play, so you can start playing after two minutes of prep. Despite the simplicity, there are some interesting rules twists: look at the Suppressing Knowledge rule for an example.