I'm going to be honest, I'm kind of weird insomuch that when I play these games, I can be kind of picky. The CGs and visuals need to be nice, but at the same time, I feel like if I'm railing a character that's little more than a mannequin, I can't enjoy it. For that reason games that promise a story with its lewds is a pretty important sell for me.
This game is a combination between visual novel and stripped down (pun intended) roleplaying game, where you make a host of choices to grow as a person, save the world, and bang every hot girl you see. Between that, a fantasy setting, and mind shenganigans in the mix, the premise had me sold.
But it's the execution the matters, and Long Live the Princess absolutely delivers.
It's a porn with story game, and, Long Live the Princess understands the importance of story offerings while also teasing the player with enough eye candy to keep people invested until such a time as the story grips them. It often does this through teasing, and rather fortunate timing, but does so in a way that's appropriate for each girl in question. Already this puts it leagues ahead of other such visual novels as LLtP understands the important lesson of pacing.
The plot is sufficient for this kind of game, and the worldbuilding has some genuinely goods ideas. More importantly, both of these are introduced solidly and you learn with the character as you need to. There's no sitting through 20 irl minutes of exposition through a conversation with a talking portrait.
The biggest strength is the characters, though. Characters are charming and diverse in both attitude and appearance, which is exactly what you want from this kind of game. There's someone for (almost) everyone (no futa options that I can see if that's your thing, sorry), some of their stories build well on others, and all of them are easy on the eyes. The game uses 3D models, as is probably apparent in the game's banner, but they're nice enough. Sex scenes are animated. The rest moves between different static poses and expressions to give the characters some life.
For the degenerates that I know absolutely none of us are, you're not wanting for options. In addition to penetration of multiple sorts, you're free to try and peep on someone changing, coax them to work in a state of undress, catch them in scandalous acts with others or manipulate them into playing with you even when the situation is dire. Risky sex in public is sometimes an option, and you can even molest the girls in their sleep if that floats your boat. Those who want pregnancy can unlock that feature as well. There's a panty raid esque feature too, which is a bit basic in how its done, but enjoyable.
The game has two modes, and you'll choose somewhere around the first week--there's a standard 50 day mode that goes into the endgame, and a unlimited day mode where you start the endgame where you want.
This game takes a page from the Souls series insomuch that it's intended to have multiple playthroughs, and indeed it will recommend the 50 day stint. However, if you only intend to play the game once, or if you feel uncomfortable with time crunch, I STRONGLY recommend going against the game's recommendations and going unlimited time--the biggest reason I say this is that this game is best experienced through trial and error rather than following a guide unless you're well and truly stuck--and I feel not having that 50 day limit looming over your shoulder making you want to make the most of every day for the best ending makes it easier to avoid that temptation. I appreciate what the game is trying to do and it's a good idea, however I also think the most important thing with this kind of game is not to spoil yourself.
Lastly, and I know this is something that a lot of people probably don't think about for an ero game, but the music is quite nice. It's varied, most if not all of the characters have their own theme which suits them. The fact that this game is completely free for what it gives you means there's no excuse not to try it if you're into the genre at all. I don't think you'll be disappointed. I sure as hell wasn't.