I need some PC-Engine recommendations, maybe a little deeper than the usual stuff.
Here are some things I'm looking for.
Action RPGs.
Dragon Quest clones.
Platformers.
Anything with awesome 90's anime art.
Ecchi stuff.
Unless we're looking a digital novels, language barrier doesn't bother me much and even still, if you have something really neat looking, push it my way, if I like the look of it, it'll just be another slot in my "improve Japanese" bank.
Action RPGs:
Ys 1&2/3/4, Dungeon Explorer 1/2, Dynastic Hero, Neutopia 1/2, Legend of Xanadu 1/2.
Dragon Quest clones:
Tangai Makyo 1/2/Kabuki spin off (especially 2), Legend of Heroes 1/2
Platformers:
Bonk 1/2/3, New Adventure Island, Momotaro Katsugeki, Jackie Chan (Kick as music), Bakusho Yoshimoto No Shinkigeki (for the quirkness).
More a sidescrolling action game but also check Shubibinman 3.
Anything with awesome 90's anime art:
Most PCE games have "awesome 90's anime art".
A few anime game you could be interested in:
Future Boy Conan (average game but good anime art although not 90s), Dragon Ball Z, Snatcher, Gulliver Boy, Gotzendiener (for the connection with Gainax), SOTSUGYOU GRADUATION (it's a breeding game more than a ecchi game).
Ecchi stuff:
Whatever Elf did on the system I suppose.