I love this game to death. To be honest, there is no way for me to talk about this and not be biased. I've played it since X-23 wasn't even fully in the game, and have avidly followed it's progress from there. All of the characters have unique personalities, styles, and ways of having sex. As a result, the four characters stand out more as people. (I'm sure more will be added, and there is even a mod for more content for this if the base content's roster isn't large enough for you.) Now, this game has virtually nothing in the way of story, and in fact is something I typically despise in a game like this, open world. Well, sort of. The unfortunate truth is that while the Ren'py engine can be used to make them, compelling open world experiences are rare on this engine. It's no RPGM, and the skills and attributes you must raise are a pain in most Ren'py games that include them, as are the other "Open World" elements creators use to make up for otherwise pathetic run times.
R.L.E., I can confidently say, does not have these issues. The world requires very little exploring (all items that the player cares about can be bought in the bedroom, and rooms are exactly what they say on the tin). Unlike a fair number of games out there, this title does not attempt to make itself play like a point and click from the 90s. In fact, due to how small the area you move through is, it feels more like a light sandbox than virtually any other game in this style and genre that I've personally played. Though, I will say that R.L.E. does have a strange habit of adding in some features that feel like they weren't fully thought out, or weren't implemented properly. These elements don't severely hurt the game, but they do serve to make me scratch my head. For example: level ups.
There are only three major stats that you can improve: these are the rate at which you can earn money, your stamina (the sexual kind), and how fast you can improve your relationships with other characters. The third can be a little on the grindy side. Experience is gained relatively quickly over time as long as you constantly train and go to class. Money gives massive bonuses to your relationships when spent correctly, and is a massive time saver. The game is essentially figuring out where the girls are going to be, what they like, and generally what the fastest way to grind relationship points is for each character. The only grinds that are really bad are for characters that aren't fully implemented yet, or if you try to seduce one of the women without having gotten through their event. (e.g. you need to catch Emma Frost masturbating after class to kick start your relationship with her.) Thankfully, there is only one of these “kickstart” events per character.
With all that said, I do have a question: why would you base it off of level ups based on time played? The question might sound silly, but let me explain my confusion. There are other games (which I'm not allowed to mention by name due to the "reviewing rules") that, while admittedly tend to be in the visual novel genre, do a better job at achieving a sense of progression. Rather than just grind through same-y conversations with the different characters, would you not have more detailed preset conversations that feel more personal, and where real decisions can be made? Without question, the best writing in the game is when characters take you aside and open up to you. A sense of progression is something that almost every other competent game I’ve played has done better than R.L.E.. It’s almost at the perfect balance, but it’s way too tilted in that category.
Another head-scratcher is the three relationship types you can have with the lovely ladies: friends with benefits, lovers, or master and servant. Unfortunately, for those excited by the last option, don't bother coming here for that. Another one of my few notable complaints about this experience is how vanilla it can feel. The only things that your type of relationship affects is slight differences in dialogue, and minor variations on dates. The actions that you can do with your sexual partners are largely unaffected by the path(s) you choose. This is a subjective opinion of course, but I think that having less characters for more detailed control would have been a worthwhile tradeoff, or maybe having characters represent specific fetishes would have helped. Regardless, it feels like the creator(s) missed an opportunity to make a solid game that much better.
Back to positives, holding this experience up beyond (mostly) engaging gameplay is fantastic art, well crafted animations, and respectable (thoroughly underutilized) writing. Even when I've unlocked everything I have an interest in, I still play it on occasion because the game is infinitely playable. Once you've unlocked everything you can still take the girls on dates, talk, and sleep with all of the girls without loading a save. Kinda like some other famous games, R.L.E. has no real ending it just becomes a sandbox to do whatever you want with. I highly recommend you give this game a chance. It is and always will be one of my favorite games I've played in the lands of smut.
P.S. There is a fantastic cheat mod for this game that negates any grind present, and as mentioned, mod(s) that expand the game’s already impressive pool of content. They can all be found on F95. I recommend playing it with only the extra content mod, and wait to make yourself a god until at least one playthrough.