imo this Ren'Py version is substantially better than the original Unity release. The "gameplay" in the original amounted to the classic "go to every map location" schtick. It's a little unfortunate that this version isn't done by the original dev. Looks like a good bit of the writing has been changed/improved, too, making this the definitive version in my eyes. Perhaps the most important change is in Morty's dialogue, replacing his more passive/submissive dialogue in order to minimize the unpleasantness that can come with this kind of MC writing.
Regarding the core content, there's a reason this is one of the best rated and most popular VNs on the site. The internet's favorite family is fully realized here, with writing and storycrafting that is fairly true to the source material. Most of the interesting side-characters are explored at least once. The sci-fi themes are used to great effect, both implicitly and explicitly.
The relationship development seems to have been thought-out fairly early on. Even now, with hours of content, our incestuous ventures play out with sufficient sustain as to maintain suspension of disbelief. This development is also appropriately dynamic; for example, we see Morticia on-board and actively engaging Morty fairly quickly, while Beth is reluctant long into their romance. That being said, most (all?) scenes are skippable in the Ren'Py release, and skipping the most objectionable content (ex. hard noncon) will be reflected in the dialogue of subsequent scenes. Thusly, no yums are yucked, nor vice versa.
Really, my only criticisms lie in the execution of some of the LIs, which tends to be highly subjective. Beth is a fine character, but she's not a very good mother, resulting in a bit of a letdown when things come to fruition. I dislike the Planetina event. I would like to see more of Unity and Kiara, but that's just my fondness for blue extraterrestrials speaking.
Final verdict? Unless you're vehemently opposed to incest, which seems statistically unlikely, you'll enjoy this one. Familiarity with the source material is not a prerequisite, either. If anything, you may find yourself wanting to watch the show after getting to know the characters here. Props to ferdafs for the killer content, and big thanks to Night Mirror for repackaging it into digestible form. Nobody exists on purpose, nobody belongs anywhere, everybody's gonna die; come watch some porn?
ps morticia is best girl dont @ me beech