Ninja Loves Pirate
How fantastic! Ninjas and Pirates in the same game, it couldn't be any more wonderful.
Ninjas and pirates have battled since the beginning of time. One day a high ranking member of the ninja clan, by the name of Yushiro, falls in love with a pirate named Black Mary.
After years of keeping their impossible love a secret they try to negotiate a truce, so that they may marry. Their suggestion is denied with considerable force.
Yushiro and Black Mary are forced into a life of exile, traveling the world looking for peace and harmony.
The game has a downloadable demo, and it has wonderful hand crafted artwork reminiscent of Monkey Island. If Pirates and Ninjas working together and falling in love can't get you in a good mood, you're hopeless.
Link (via Grumpy Gamer)