I don't play many games, but I download every Ren'Py game which has art that appeals to me and extract just the art (no time to play everything). And I can say that none of these are as good as DmD. It's just personnal taste but I think in terms of character design (it's different than number of polygons used, as many players of mainstream games seem to think) and facial expressions (I know they are limited in DmD but at least they look human. not like monkeys on crack like in many porn games), DmD is still better.
Story is/was better written also for a long time.
The only 3D game I think is superior, that I really play and not just browse the art is Timestamps : Unconditional Love and its sequel Lost Love. But they update like 2 or 3 times a year.
Treasure of Nadia was very nice too, but again too vanilla for my taste. It was the art, story and gameplay that appealed to me. In terms of sex scenes, it's always the same "MC is the only guy who fucks anyone" to appeal to the masses of american incels paying for the content.
Besides this I like and play a few other 2D games, like Witch Trainer, SS, SU, and Star channel 34, which all have their appeal, but you can't really compare them to DmD since it's 2D and not focused on incest.
TL;DR : for me MrDots hit the jackpot in terms of design and story at some point and then it was fucked by paying customers who want their fantasies of being a dominating dudebro to suffer no compromise at all, which results in the game not evolving and always being the same shit and Dad & daughter fucking in the shower for the 192th time. It ended for vanilla people long ago, now it's time to have more fun.