Japanese dating simulation games
2D beat 'em up with retro graphic, but lots of scenes including classrooms, gymnastics, swimsuit, school uniform fetish.
Jumping is a bit chunky, and remember that on the first level you can kick the shoes back to eliminate the enemies too far away (or you'll never reach the first boss, which is gonna defeat you anyway).
ZONE games aren't really games, but sweet Jesus does 4chan love them and each one is well-made. Another Illusion game, so it's good stuff as usual.
You can create a classroom with 25 students complete customizable (the male customizations are really poor compared to the female ones) and then see how they react with each other.
Different artists worked on the visual art, so they're not all so awesome; not like a leech-girl could look better anyway.
There is also a worthy sequel, and the finale released.
The game is in English, but there's no text apart from the start screen and the in-game menu.
No eroge novels (aka 'erotic visual novels') in this list: there are so many of them that we have made a page just for them.
We also have a page for Adult interactive Fiction for smut made by non-Japanese writers.
There are multiple dungeon themes and over 10 big dungeons to beat.
If you choose not to use your potions, you can choose to "life steal" the weak downed enemies, not to mention finish off the bosses.