I found this site about two years ago. These guys made the Ero Nights game and some others. At the bottom are 8 or so pictures. Each one is a small game. They are pretty good.

http://ohkoku.15.dtiblog.com/

I also found a link to this page of more of their games. Almost every banner is a game. They are small but the ones I have figured out are pretty good. Still nothing as great as Shark's but still ok. Of course it is all in Japanese.

http://www.e-ohkoku.jp/main.html

Nothing great, but the one or the other kinda funny. Nothing to do with much of erotica in my opinion - but nice to spent a few minutes with.

Lots of interactive hentai there. Good stuff.

Besides Shark, he's one of my favorite Naughty Flash artists.

An interesting selection but one seems to be broken. Anybody able to get the 3rd one to work properly? Nothing registers when ;, L, K, or J is pressed for me.