Saturday night was a more quiet night than the night before. I was at a house party where I met some friends and 3 girls were there that I had never met before, one of them was hot. The interaction was playful, but I didn’t quite feel as comfortable as in a bar to game them! Especially in front of everyone. I had a hard time doing kino and isolating the girl. Even establishing a playful convo like when you’re high energy in a bar wasn’t as obvious. I remember reading a FR of Cola when he was at a house party and where he managed to isolate her to show her something in a different part of the house. I didn’t know the apartment I was at, perhaps I could have looked around for some reason to isolate her, but even then the living room was right next to the kitchen where we were hanging out. At the end of the night, I proposed to one girl to go out next week, and said “we’ll see with Joe if he’s available!”, which I perceived as a meaning that she wasn’t interested.
I wonder, in a house party where everyone is gattered, talking, having fun, what are your tactics to isolate the girl or to create attraction and built temperature?
Then a friend and I went out to a hipster bar –not my kind of place- where there was about 7guys for 1 girl, and perhaps 3 sets worth approaching. I immediately opened the first one as we walked in. I locked eyes with a girl, and after a minute, went up to the 2-set and said “happy saturday night”, to which she only responded with a polite smile. She seemed bored –it as around 2:15 in the morning, so I went back to my friends. I didn’t approach a 2-set that was at the bar, they were hot and sitting while facing the room. I made up reasons (tired, don’t know what to say, the usual stuff…) and didn’t approach.

You should start a journal, buddy. You look like you have the right focus to get really good, but if you keep on going like this you'll have 18734 FR threads

As for the house party thing, depends if you plan on closing that night. But it's always good to isolate with the girl to get a more private conversation once you feel you are both comfortable with each other, even if you don't plan on going for gold that night .
I don't know if you're just using the wrong lingo but you should always be building attraction, whatever your plans are. If you mean escalating sexually, then yes please isolate first and make sure it won't make her look like a total slut in front of all her friends.