One thing i like about Halo Universe is that most of the things on it are possible in real-world, unlike most sci-fi series.
Discuss the realism of technologies and stuff in the Halo Universe.
[Edited on 05.10.2011 2:59 PM PDT]
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I like the fact that humans are still using bullets. Even with all the plasma technologie that could or should be avaliable by 2552. Pumping your enemy full of lead is still they way to go, even 500 years into the future.