I'm looking for a book or something written about gaming that deals with being very masculine/mature. I game but I have the problem of saying too many words, appearing as beta, etc. I just come off as insecure. Girls tell me I talk gay (texting-wise) and I asked them for an example they said, "Well you asked me if I can go out and I said yes. And then you were all like, "ok come at x at y time or otherwise bla bla."

I get the way gaming works, but I need a much more masculine style to it. I try to get too creative/complex with it so I was wondering if there is a book or a particular method focused on gaming in a more masculine manner than gaming while looking all beta with over-wording, all the smileys, etc.

Another problem I got is when girls try to put me down or shit test me. Sometimes I lose my cool and retaliate making them to actually want to slap me, sometimes I try to give these witty responses which have no effect, and sometimes I try to be all mature. Example: A girl told me, "You have friends?" I said, "I do, do you?" She said, "Nope." That was such a beta response as if I'm trying to get back at her. It's not something that a cool alpha male would do.

Something got me off track and it was when I told this one girl she looks dazzling. She told me, "Haha, who says that?" I said, "I do." When I could of said, "Gentlemen do."

Just don't try so hard, if you're not worried that she might be unavailable for the first option you suggest you won't feel compelled to give her a second option. Abundance mentality man.
Come on man, whenever you react and get defensive you're destroying your value in her eyes. It's not that you can't come up with a witty enough comeback, it's that you're trying to 'comeback' at all, what are you trying to win here?
I don't see a problem at all with saying "I do" in this situation, so long as you weren't feeling defensive and insecure when you said it. Honest question, when she asked you 'who says that?" did you feel attacked? I'm willing to be you did. Transcend that shit, smile and remember that it's not up to you to prove to her that you're an awesome guy, it's up to her to figure it out before you roll on to the next woman lucky enough to be in your cross-hairs.