Recently, Japanese 2ch forum just finished the voting event of Best Erotic Game of the Year 2012. If you're boring at night and don't know which game to play, just refer to this top 10 list chosen by Japanese gamers. Of course you need to know some Japanese to play them, and make sure you're already an adult:)

10th: Rance Quest Magnum (ランスクエストマグナム)

9th: グリザイアの迷宫 -LE LABYRINTHE DE LA GRISAIA-

8th: DRACU-RIOT!

7th: 创刻のアテリアル

6th: はるまで、くるる

5th: 月に寄りそう乙女の作法

4th: Venus Blood -FRONTIER-

3rd: この大空に、翼をひろげて

2nd: 黄雷のガクトゥーン

1st: はつゆきさくら White Graduation