Anthophobia is awesome because it has great content, boss fights, and even different endings. It's challenging but not to the point of rage quitting, and you have a variety of support units to help you from time to time. There are dialogues here and there to provide information about the setting, but you still have to figure out where to go and how to reach any particular ending. And it delivers the post-apocalyptic theme pretty well, even the endings are bittersweet.
I DO NOT recommend Wolf's Dungeon unless you want to farm forever in every stage so you have enough stats to progress, plus the save system is terrible. That is the one game you should cheat through mods and other BS, because that's how bad its design is. It does have hardcore animations and animated CGs, but you WILL struggle to get those.