TLDR is LonaRPG is technically finished.
This game is mostly RPG than it is porn.
Porn content mostly consists of non-consensual sex like brutal rape. Though as far as gameplay goes for this content, Lona herself can rape male NPCs to exhaustion/death (however the CGs of Lona getting raped and her doing the raping are the same). There's also a pregnancy system where she can give birth to different species of humanoid/monster. You can have Lona rebirth (aka doing a NG+) into another race like moot, deepone, abomination or mixed-race (only moot+abomination atm), each one coming with their own racial stats/skills.
The RPG content is simple but very deep and unique. For one, this game doesn't really check your stats to win but your ability to come up with viable strategies (you can have Lona locked at level 1 and you can still win the entire game if you know what you're doing). It has minimal vertical but heavy horizontal progression, almost every items in the game has their own uses. This isn't a typical hack and slash game that demands having good reflex and dodging skill, this is an action strategy game where positioning will often decide the outcome. On top of that, this is the only H-RPGMaker game (that I currently know of) that allows you to mess around with ANY NPCs that are for the most part invincible in other games of this type.