Smutstone is a collectable action adult card-game where you play as a protagonist entering a fantasy world and progressing through a series of card battles in a Hearthstone / Gwent style. As you unlock the different frames of the main story you will access a bunch of well-drawn sex scenes, as well as earning new cards, essentially consisting of horny female creatures that will fight naked alongside you.
A Halloween-themed sabbath event starting October 9 in which players compete for first place against a fairy, a succubus, a witch and a beast. The post does not list specific rewards.