7. Personally, I would like the answer to be D. But, the question mentions Halo and Half Life which require you to do something over and over until you finish it. So, the answer is B.
8. I was stumped between answers A and C, but now I'm sure that the answer is A. If it was just a plain ol' puzzle game, there would most likely not be dialogue with other people. So, I think it's a roleplaying game. A.
ANSWER KEY:
7. B
8. A
One of the major characteristics of ars nova music is its use of almost any rhythmic pattern.