Jade Dynasty features a wedding event and items for marriage-minded avatars, while Perfect World International GMs will be interacting with players and giving out a rare mount. Rusty Hearts is putting on an art contest, and the prize is Roselle Vegerius (the game's latest premium character).
Forsaken World players will receive a Valentine's Day card and random items, while War of the Immortals fans can collect chocolate and trade it for additional XP. Finally, Ether Saga Odyssey players can enter a screenshot contest to win XP and bonus items, as well as bid for rare pets and send custom broadcast messages.
[Source: Perfect World Entertainment press release]