i realize that it's too late to convince folks, but DDLC is a strange choice. It's one of the few dempa VNs that made it big in the West, but I don't think it should be chosen over the things that inspired it. Subahibi (Wonderful Everyday) really should be there instead. My list in total would be:
F/SN
Subahibi
CLANNAD
Oretachi ni Tsubasa wa Nai
Honorable mention to steins;gate, but it's just not influential enough. Oretsuba because Ou Jackson needs a rep and also it's easily my favorite of the untranslated kamige so i'mma put it here and watch it lose.
Nonsense. "Testing" is for when you're still guessing--and now, I have no need to guess. -- Agatha, Girl Genius