i just rented both of these games today..and they're both really sweet..
i havent played midnigh club 1 before..but MC2 is one of the most fun racing games i've ever played..it's got really sweet graphics and definitely has that gta/rockstar feel to it(illegal street racing, running people over)..
i have played NBA Street 1 before though..and it was oneo f my favorite games..and vol. 2 is definitely a step up from 1..the combos you can do are so awesome..i haven't played into the game enough to see all the cool secrets in the game..
i'll update my opinion more after playin the games more..but these are both two really sweet games..
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-B-Wald