CG writes: Lust Goddess is a free-to-play mobile/browser card based strategy game with some adult-themes. You can grab it from Nutaku.net. Its a fun time-sink that you can play without having to spend any money. That said, progress can feel quite slow but is rewarding. Take a look at the video for the full lowdown. Also as mentioned in the video, I have reached League 15 as shown in the screenshot.
Source: N4G PC How to Play Lust Goddess – Free-to-play Mobile/Browser Game (NSFW)