>Tail ConcertoFuck yeah. The game has a cute cast of characters with some racy jokes hidden here and there, plus the story goes from goofy pirates to serious crap with racist overtones (Praire Kingdom has 50,000 dogs but only 2,000 cats) and a decent difficult curve to keep you busy for half a day.
Also, tits. Alicia the pirate catgirl and the dog princess have a solid pair of titc each and the game will keep you reminding you about them.
Oh, and the character designer was Nobuteru Yuuki and boy, it shows.
https://www.youtube.com/watch?v=SfVcresdBeA