Shimai Tousatsu ~Aikagi o Teniireta Ore wa Kanojotachi no Seikatsu o Okashite Iku~Avis

It's linear, you only get the feeling of stalking for the first few sneak filming before this quickly turns mundane. There are hardly any stories, you get to know the girls a little, fuck them, then its over. The only merits are that the chicks are well drawn and the gameplay isnt too crappy.