I am stunned Dead Space underwhelmed you. Stunned, I say! The only chink in the armor for me was that there was a fair amount of backtracking in the game, which actually makes more sense than most games, but isn't the most exciting way to go about things. Still, a minor complaint about what I consider to be one of the only games that actually attempted to create some next gen game play (getting rid of the HUD, strategic dismemberment system), instead of just next-gen graphics.
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“It takes considerable knowledge just to realize the extent of your own ignorance.” ― Thomas Sowell