Yeah some of the Twinery ones do some really cool shit I would like a play around with at some point. As in the ones that implement a full phone OS operating systems and work a story around it. Just a shame the genre is NTR 😞
What are you looking for in terms of similar?
OF Simulator? Like Family Business by Family Dev
or
Visually Similar? Like Demon Deals by Breadman
There really is not a game that comes close to Starmaker in both. Maxs Life by Kuggazer is a left field suggestion, but this is a 3D art style and the women are not quite as curvy (well besides the woman you start the milk farm with, she is nice on the eyes....)
The only one that comes anywhere close, and again is 3D assets not 2D would be Loser by Night City Productions (Search their Patreon for the free download links) 0.13.00 just dropped but only expect updates once a year as their main project is SuperPowered
Note - It is a grind game, you have been warned, but the pay off is 👌