Smutstone hentai battle card game launched on Nutaku on November 2018. Available for free in your internet browser. Developed by Hooligapps.
You are a wannabe alpha male dude in a strip club bragging about your relationship with a stripper. After the stripper is done with her show, you meet her in her room. Suddenly, a dark witch appears from a blue portal and drags you and the girl into the magical world of collectible online card games!
Source: N4G PC [NSFW] Hentai Card Game "Smutstone" Launched on Nutaku