Adult Video King sounds incredibly crazy and amazing in all the right ways, although I doubt that will ever get translated so I might as well learn Japanese so I can play it. Figu@mate is another one of those weird games that I would love to play someday.
Since I personally think most anime based on games are garbage (because they are always short and never can make any progress or pick a heroine that I just absolutely loathe), it would be nice to see some of those get translated. Examples would be "They Are My Noble Masters", "Do Love Me Seriously!" (I know its being translated but very slowly), and "Final Approach" (no sexual content) are just some that I would love to play.