It's got to be a direct prequel to the first game. (thehdroom.com)
Set as a prequel to the first game, Dead Space: Extraction delivers more details on the alien threat and takes players into the first person perspective to help make those dismemberments more gruesome than ever. (bit-tech.net)
The first game had some great ideas which perhaps weren't executed as well as they could have been, and the story progression could have used some extra attention, but Bound in Blood, the prequel to the first game, seems to have been polished to a sweet, sweet shine, proven once more with the new trailer above. (thatvideogameblog.com)