Voltage has some free games such as My Forged Wedding party, Sleepless Cinderella, Be My Princess Party and Sengoku Ballad Party. Well, the heroines in those games are kinda similar in terms of personality. I recommend Cybird's games, in particular Midnight Cinderella and Ikemen Sengoku; those games are really interesting and easier to clear than Voltage's. Also, lately I've discovered a new game producer called Ciagram, their games include: Chocolate Temptation, Princess Closet, Diamond Girl, etc. I find the storylines in these games worthy of playing and they don't have any mission, which is quite relaxing and comfortable.