The Coceter Chronicles is likely my favorite game on this entire forum, and actually one of my favorite games in general.
It has a very engaging and original story, especially for an adults only game. I feel like it is one of the better stories I've come across in ANY game.
Tabitha, the main character, is gorgeous, as are most of the characters and animations. The game is filled interesting characters, so most people should find someone that appeals to their tastes. You do get a lot of control over what Tabitha chooses to do or not to do and whether she enjoys it or not. There are a couple exceptions to this, but for the most part you have full control over what happens to Tabi.
Though a bit of the inner monologue interactivity has gone since the beginning days of the game, both in-game and in earlier versions (there used to be a bit more of "Tabitha did X/Y and Liked/Didn't Like it"), the game does a good job of making you feel like you're really "building" your Tabitha.
The game also offers the ability to turn off certain content if you don't want to see it, primarily the Futa stuff. Though Futa content is some of the best content and characters in the game, so I'm not sure how the experience really is if one does choose to turn it off. Turning off bestiality was an option too, however those scenes have been removed since version 12f.
There is variety in the areas you visit, and though there are overall many maps, it never really feels like you're doing a whole lot of walking around back and forth like occurs in some RPGMaker games.