I really enjoy Sluts Inc. game. It is idle game, which allows enjoy art without spending a lot of time on activities. However, upgrading system keeps players involved and reward for activity. Especially since last update not long ago, when players got second area, where we can get resources to boost progress in main one. So it is not boring for sure. Game is over year old, so not many bugs already. Also, devs are still active and develop game, respond quickly to issues if they appear.
About content itself - I'm a big fan of quite 'natural' art, and I found it here. Art is mix of all themes and fetishes, so everyone will find something for them. We can find movie characters, fantasy one, role-play, or performing regular jobs… of course in fetish way, like teacher, secretary, police, singers, racers… pretty everything actually. There is also a lot of porn content, most of the characters already have their own plot with about 13 pictures / animations.
I really like that characters appearance is constant between pictures, and even between different characters, if they enter in interaction. It is quite well generated AI content in my opinion.