I gotta say I love this game. It's cute in the good way. Yes, some of the talk it's even a bit silly, as MC essentially thinking his daughters are 8 year old that never heard of sex, but it is silly in a good, friendly way, not silly in the sense of being just ridiculous crap (like some novels that think writing "my son is hot" every 5 seconds is good writing). Single again does not seem to be a life changing drama that will shatter my core, but neither is a stupid "everybody love MC and every is happy that everybody love MC and they are happy about that too". Conflict is there in modest but sufficient amounts to keep interesting. Besides, girls reactions are nice and cute. I really like the pacing too. Things are slowly, but surely moving.
Of course, Becca is the best. I am statistically week to tsunderes, but not here. Becca kind of destroy the competition for best girl. It is kind of sad for the other two. Still, Abi and Lily are nice too.
About some of the comments I read:
1) I do think game over the way they are implemented are a waste of time here. Specially time of the developer. Players don't like it and they just take time for dev to focus on important stuff. Game overs only make sense in Visual Novels if they happen way down in the story, in which things go to hell cause you screw up way before. And the only way to "save the day" is to having chosen before the right actions. The way is implemented here they just force you to pick the right action after forcing you out of immersion in a silly way. Personally, I would skip them.
2) VN is not lineal! Just go and read the walkthrough in the front page to realize is not. Besides, the story have just started. We are barely getting to know the characters. I have read nonlineal VN in which you made no decision down a couple dozen hours down the story. So asking for a "lineal tag" for a story that is just starting and that have already shown it is not lineal is just plain stupid (no offense intended)