This anime does something very weird and interesting, in an equally strange but effective manner. It is what I can only call an engaging civilization or city builder game playthrough but in anime format. I didn't even think it was possible to write such a story in this format while it still being engaging, considering I find watching other people play those games to be really boring. But Slime manages to pull it off. Not without its problems, but still. On the other hand, the show tries waaaay too hard to be a generic sloppy action isekai, especially in the 2nd cour, despite imo already finding its footing and weird niche. I don't know if the author was too scared to write something so weird and felt like he had to make something with more "wide appeal", but the result is a show where half of it's runtime focuses on an intriguing and unique premise, and the other half of it focuses on completely uninteresting and bland action scenes. Perhaps worst of all, the first aspect of the show could have really used the screentime of the second aspect to flesh itself out.

Some Spoilers Ahead

Starting off with the strong suit, the city building antics are genuinely fun to watch. OP protagonists are often very boring, as their powers flatten their characters, make them swoon all the girls, obliterate everything in their path as they aura farm for painfully dragged out action scenes where they will obviously win. However, OP protagonists who use their powers for weird shit like this lead to stories which are so much more charming. My personal favorite is Tondemo Skill, where the story revolves around an isekai'd guy with the OP superpower of instant Amazon delivery services, who then obtains physically very powerful allies, and the entire show revolves around them traveling the world and cooking tasty meals. Slime is like this, the protagonist uses his OP superpowers to do something unconventional; build an utopic town with different peoples who would normally be at each other's throats living together peacefully and in harmony, covering each other's weaknesses, held together by their common respect of the MC. First the goblins and the wolves get along and start living together, then we get some dwarf experts to help them sort their shit out, then some ogres (oni?) arrive, then orcs and lizardmen get along and move to the town, and so on. You see the town go from tribal huts to well built houses and finally into a modern small town with running water and everything. The aforementioned respect is borderline cultlike and that is a bit weird but overall it's a really cute concept executed pretty well... until it isn't.

Some things don't make sense in this town. Mainly food procurement, as there are no farms to speak of, and the populace is just magically fed I guess? There was hunting and gathering when it was still a village but once the village got a little bigger that aspect was completely disregarded, even though obviously as a settlement grows food becomes a bigger concern. A very silly moment is how 150,000 orcs join the town. That's just way too many fucking orcs for the size of the town we see from above, and if this was the case orcs would completely dominate the town's population but goblins are still depicted as the majority. Feels like the author wrote 2 extra zeros accidentally. Another issue are the dryad spirits, whose only concern being the protection of the forest, are fine with a town (honestly a small city if the orc numbers are real) being built in the middle of it as if that won't have any negative repercussions for the forest at all? There are a lot of small details like this which you are just meant to ignore I guess, but it feels pretty unsatisfying, and I feel like if more attention and care was given to it, most of it could have been ironed out. Not to mention expanded even more, I want to see every single facet of life of this town, I want to see all of it's struggles and the villagers being happy after hard work, and I want to see the MCs interactions with the numerous side characters more.

And then you have the other half of the show, which is action and fight scenes. You watch characters (whom you don't care about) have boring back and forth fight sequences (which you don't care about) screaming skill names (which you, again, don't care about), all while knowing Slime (and/or his allies) will win anyways. If the animation was great it would still be bad but at least pretty looking, but the animation is pretty average too. All of this causes the MC to be a more traditionally boring overpowered MC and not one that subverts that power to do unique and creative stuff like I talked about earlier. The fights themselves are never interesting, it is always a back and forth of different arbitrary skills with no tactics or mind games involved. The most interesting parts of the fights are their results. For example, the peace treaty signed after the orcs were defeated was intriguing, but the orc fights themselves were so outstandingly boring, with only the Orc Lord's backstory being nice (and that backstory itself didn't include any fighting, it just took place during a fight scene, so I don't think it even counts). The masked villains we see are very annoying, both in their design and mannerisms, and yet are always a central focus. Most of the villains and bad guys aren't very compelling in general. I also felt like in the last 5 episodes the story got very sidetracked with the academy stuff. Even though I liked the fairy character, it was a slog.

To top it all off you add onto this some sleazy fanservice here and there (literally the only reason why they built that hot spring) and some pseudo-harem dynamics and you have yourself some steaming isekai slop. Not the worst slop, slop that seemed like it was going to not be slop and be something unique instead, but at the end of the day just slop. One thing to commend the show for is its ability to have a pretty fun cast of characters despite how inflated the cast is. Although most of them are as deep as a puddle, that's the natural result of having such a big cast.

Final note, turning that adorable lizard girl into a generic woman after she got her name should be a crime.