Only one I'm not sure about is 21 :/
1.Kikoukugai the Cyber Slayer
2.Er... Sekien no Inganock?
3.Katahane (Yuri, the play.)
4.Yume Miru Kusuri... Drugs lol.
5.Shikkoku no Sharnoth
6.Sharin no Kuni, Sunflower Girl or something
7.Hoshizora no Memoria
8.The goddess is a bitch, I mean Monmusu Quest.
9.There is no Tsukihime anime
10.GARcher, I mean Fate/Stay Night
11.Utawarerumono
12.World End Economica
13.Planeterian
14.Kara no Shoujo is graphic.
15.Swan Song
16.G-Senjou no Maou
17.Wanko to Kurasou (Dog-girl heroine the game)
18.Saya no Uta
19.Narcissu
20.Dengeki Stryker is not Yuuki Yamato
21.....Er.... Koneko Doumei??? I don't know lol.
22.Steins;gate
23.Will's pretty dress-up, I mean Kamidori Alchemy Meister
24.Deardrops
25.Kirakira
26.DEMONBANEEEEEEEEEEE
27.School Days, the anime, the game.
28.Obama & Putin, I mean Ohama & Putina in Osananajimi wa Daitouryou
29.Yumina the Ethereal
30.Kazoku Keikaku "Family Planning" get it?