What should I do about my bf who doesn't notice me?

I am currently at my boyfriend's apartment for a party he's hosting (we're both 24). The party is to play the board game risk (we're nerds, i know). anyway, i bought and cooked all the food for this party, bought all the beer and wine, and now i'm sitting in his room because he won't even talk to me. he's so engrossed in the boardgame, he didn't even notice that i cleaned his entire kitchen, took out all the trash, and made life really easy for him. i'm basically sick and tired of this, and i don't know what to do. am i his doormat??